It sounds dumb but my pick would be the SNES. There’s just something about 16 bit games I love.
The SNES has so many good games, like sf2. The first party games and some good arcade ports.
It also has a lot of good RPGs, like chrono trigger
The controller is really cute
Tho, the PSP is a close second. Tekken dr running at 3x resolution looks beautiful
Yes I’m a sucker for dpad centric devices. Yes i love emulation.
16 bit stuff looks amazing
GameCube. Lots of fun with that console, and Skies of Arcadia Legends is a highlight.
Close second would be N64. The games were really unique, partly because designers had to work with limited hardware and a really bizarre controller. Mischief Makers is my all-time favorite for that one.