Sega NOMAD is better than all the game boys put together. It's been almost 10 years and Nintendo's portable's still can't beat the graphics on a nomad...HOW SAD.
My wife gave me a GBA SP for our five-year anniversary (gawd, I love her), and I love it. I have 10 games, and I take it with me everywhere. Standing in line, I sometimes fire up Tetris or Sonic 2. Awesome.