GBA SP
Awesome battery life, backlight, so not a problem to play outside in the sun, awesome games. Also, its compacity was the definition of portable, in portable console. It was a small SNES actually. It had fuckton of cool games, Fire Emblem, Mario Kart, FZero, Metroid, Advance Wars, Pokemon ...
I loved the GB SP. Never had a GBA Micro though.







