Haven’t owned one myself, I did start with the original 351 myself. I sold it to a friend eventually and upgraded to an RG353 that I use daily at work.

All you really need is a controller for it (backbone, kishi, gamesir x2) and the retroarch app. Dump your Roms to it and done. Maybe some tweaking in retroarch

There is always the phone + controller grip option. I do that whenever I want to play something later than ps1

YES. The Stadia controller kicks ass. I love its clicky dpads and the sticks are excellent.

this controller fucks. I love it.

I use the now infamous billionaire submarine controller, but I’ve had it for years. Logitech F710. A shockingly solid controller, though its wireless is a bit spotty.

I also have the retrobit saturn pad that I bust out for fighting games, and a couple stadia controllers I use for multiplayer.

Also a big fan of using a PS2 controller with an adapter.