Megaman and Bass is in my opinion the best classic Megaman game, it has good visuals, an amazing soundtrack, cool bosses, fun stages, and high difficulty that won't make you toss your gba across the room but still gives a big challenge. This game gets too much shit from fans for being "too difficult", when in reality Megaman 1 and Megaman 3 are way worse games with a lot more bullshit.