PS3 is a strong, strong contender for reliability and repairability reasons. You could replace the CMOS battery and hard drive today. You have to jump through hoops to add funds to your wallet, but once you do the store still works for the moment. The last time I looked there were even some decent deals from a couple of publishers.

No memory cards to worry about. The physical discs were expensive enough that people took care of them and are more inclined to sellt hem than toss them: it’s still really easy to find discs on eBay, and they’re new enough and most games have been remastered so they’re usually less than $20. It’s impossible to find Sixaxis or Dualshock 3’s, but fake ones from AliExpress are super cheap and almost identical except for the almost-never-used motion controls. You can also use a lot of USB controllers, or use something like a MayFlash adapter to use just about any controller you want. I think you can pair Dualsense too, though I haven’t tried. If you have original OEM’s, I don’t remember them ever having drift problems. The only real problem with the original controllers would be battery life (you can replace them if you’re handy), USB Mini-B, and how they needed a handshake and could only charge plugged into certain devices or special power supplies (another reason to just use counterfeits).

With a fat model you have full backwards compatibility with PS1 and PS2. With the online store you can get a lot of PS1, PS2, and PSP games. Not sure if this counts, but you can do remote play with a PSP too. Some of the online multiplayer probably still works, depending on the game. It has an HDMI out and the old AV out, so you can hook it up to almost any TV with cheap and a sailable cables. You can also load up video and audio files for playback, saving wear on the disc drive. I remember briefly experimenting with using mine as a media server back in the day.

The drawbacks are few. I’m assuming no hacking or modding, so no Nintendo games. No Xbox either, though I don’t think that’s anywhere near as important. A disc drive is always just a matter of time before it fails. The fat model has PS2 compatibility, but also was less reliable, so that’s a trade-off. The digital store is not long for this world. I used to use mine for Netflix, YouTube, HBO, etc and I’m guessing those apps have probably been shut down at this point. You lose out on modern games too. The PS2 and PS5 are both good options too, but I think the PS3 has the edge. If they ever add a PS3 emulator to the PS5, or if the PS5 library grows in general, it could still overtake the PS3 in the future.

If you lean more Nintendo I think the WiiU was better than the switch until they shut the e-shop down, and might still be better if we open this up to modding and hacking. It’s just easier to work with a WiiU because Nintendo stopped caring about protecting it. It’s also better for playing DS and Wii games for example. A ton of Switch games were also released on WiiU, and the Switch’s legacy content is mostly locked behind the online subscription - how long will that be available for? Still has the disc drive issue and can’t play Sony exclusives, but a strong option.

I’m not usually an Xbox guy, but they’re usually the easiest to mod, the emulate things well, and even without modding the Series X is probably the best option for pure backwards-compatibility with a good chunk of the libraries of every Xbox generation ever. The problem is you get neither the Sony nor Nintendo exclusives. And Xbox exclusives really aren’t all that enticing to me. Maybe if you’re into HALO or Gears or Forza Xbox is a more appealing option. The best IP’s Xbox owns are often released on other consoles, like MineCraft. Which is great for the industry, but hurts Xbox’s ranking here.