Assuming that you want to keep your budget in a price range similar to the Capresso Infinity Plus, you don’t have too many electric options that will be suited for espresso, let alone suited for filter coffee and espresso.

That being said, I think the Baratza Encore sounds right up your alley when it comes to longevity and reliability. It’s more expensive than the Capresso, but it’s durable, repairable (and popular enough that you’ll find lots of documentation online from others who have had to repair the grinder), and definitely a capable-enough grinder to get tasty cups with. In my personal experience, it’s the cheapest electric grinder where you aren’t necessarily conceding taste for convenience when it comes to grinding for filter coffee. And if you for some reason get the itch to upgrade your setup, the Encore can be made to fit a different burr offered by Baratza, the M2, which does improve the filter coffee. The original Encore makes claims that it can grind for espresso, but you should take that with a grain of salt. While it can technically grind at the espresso range, the grind adjustment mechanism simply cannot make the minute adjustments necessary to dial in your espresso properly. You can probably get a drinkable espresso, and maybe even a good one depending on the particular bean, but I don’t think you would get enough control to ever be satisfied if you are particular about your espresso, or ever think you might become particular in the future.

That being said, Baratza has also recently released a different version of the Encore, the Encore ESP, that they claim is capable of making minute adjustments for espresso. I want to stress that I have no personal experience with this grinder, unlike the Encore, so I cannot vouch for its suitability for espresso, nor whether it’s worth the additional cost. It is worth doing more research into if you think that you’ll want to get more into espresso.

I know that I wrote quite a bit about the Encore, but that’s really just because I made the assumption that you were looking for an electric grinder. Others have mentioned hand grinders in the sub 220USD price range, and I personally would tend to choose a hand grinder of the same price versus an electric grinder. This might be due to my own personal biases, but in my experience, hand grinders offer far better value for money in this space (but how much you value convenience may differ).

If you don’t mind using Meta services, you may have some luck with big discounts. I’ve seen BNIB Pixel 9’s for as low as $475 on Facebook Marketplace, though most of them are $500-$550. I’ve purchased my last two Pixels through Marketplace and haven’t encountered any issues.

That being said, I like my Pixel 8 Pro and the performance has been great, so I’m not sure the price difference for a brand new Pixel 9 direct from a retailer as opposed to a Pixel 8 is worth it unless you really like the squared off design of the 9.

There’s been a lot of suggestions for an Aeropress, and I don’t want to retread any ground, but that’s a good suggestion. Since you said you didn’t want to rule out pour over though, I might recommend the Hario Switch, so that you can experiment with both immersion and percolation brews in just one brewer. It functions similarly to the Clever Dripper that someone else recommended, but since it’s the same shape as a V60 it has the added benefit of being able to leave the switch open and brew a standard V60.

On cold brew: I don’t recommend making it and reheating it, but some people do. At best, I would make a super concentrated cold brew (maybe 1:4 or more if I could really push it), and add hot water up to the final volume to get a hot beverage. Reheating coffee leads to it losing a lot of its volatile organic compounds that contribute to the interesting tastes and smells that you get from coffee. Cold brew is suitable for “meal prepping” your coffee though if you don’t want to make time in the morning. If you’re at all interested cold brew, I would even more strongly recommend either the Clever Dripper or Hario Switch. You can use them to filter your cold brew after it’s done steeping, which would be much more tedious in an Aeropress.

Honestly, unless you know you’re going to stick to a single brew method, I’ll vouch for the J series. It’s their oldest lineup, so I would think that it will continue to be supported with replacement burrs for the foreseeable future (though mine hasn’t needed any replacement parts at all over the course of 7 years of moderately heavy usage). I used a Jx for pour over and espresso for 5 years before changing it up, and I still think it was the most dramatic change I’ve ever made with regards to cup quality. It’s now mostly my travel coffee grinder, but I’ll still pull it out from time to time since I enjoy the ritual of hand grinding.

I can’t speak to their other grinders, but I know that Lance Hedrick has reviewed all of the more expensive (and more singularly focused) 1zpresso grinders as well across various videos on his channel.

Chiming in to provide another anecdotal experience. At a drip grind size on my 1zpresso JX, I take no longer than half a minute to grind an 18g dose of beans and it requires nearly no effort at all. If you’re trying to keep the budget under or around $200USD, the brews you get from a nice manual grinder are significantly better than what you can get from an electric grinder at a similar price point, but you are trading convenience. If you’re entertaining or brewing for more than a few people regularly though, it might be worth the tradeoff. For me, the flexibility and portability of a manual grinder were definitely a priority, since it allowed me to take a very compact brew setup while traveling so that I wouldn’t be stuck with bad coffee while backpacking/in hotels.

I always dial my espresso by taste, not time. Doing this will give you a lot more flexibility. That being said, I think the range where most of my coffees feel dialed is about 25-40 seconds.

I want to preface this by saying that I rarely change my shot from my standard 20g, so everything I’m going to say is conjecture, but I would guess that a single shot that takes 30 seconds to pull would be wildly overextracted. The reason why a double shot will take so much more time is because the puck of coffee that the water has to force its way through is much taller. Creating channels through a larger puck (or a puck made from much finer grinds) takes more energy from the water, so it should take longer. Once channels are made, the puck will quickly deteriorate, which is why the flow rate is so much faster at the end of a shot. That being said, you will definitely want to adjust your grind size for a single shot. Grinding finer than you would in a double shot will allow for a more even extraction in a single shot without overextracting the coffee, but it still shouldn’t take as long as your double shot.