Quote Originally Posted by Yamaneko
Get the SP. With your collection of GB games, you'll probably get more use out of it than a DS. Be warned, however, the GBA is slowly dying out.
I love the GBA SP, in my opinion it's close to a perfect handheld console. Unfortunately, handhelds don't last like home consoles in the shadow of a new generation. GBAs are very quickly dying out, there aren't going to be many new games from now on, and I'd say it won't be an incredibly long time before retailers stop carrying new GBA games. It's a wonderful system, but only get it if you're happy with what's around right now.