(disclaimer: I didn’t make this meme, but I do share the sentiment of rapidly losing focus/mental energy when gaming now.)
Favorite of all time? The SNES. It felt like the peak of 2d graphics before the slate got wiped clean for 3d, so we saw a ton of great games from devs that had been playing/creating 2d games for decades.
Favorite currently? PC. I have a switch, steam deck, and PS5 as well, but 99% of my playtime is on PC.