What Darkk was hinting at was that one word/extremely short replies are frowned upon. If the question is basically an opinion question, don't just give your answer, justify it.

Anyway, I'm still using my original GBA, which I paid $100 for when it first came out. When I heard about the GBA SP, I definitely thought it was cool, but the new features in no way justify spending another $80-100. The graphics are exactly the same. There's no games you can play on the SP that you can't play on the original GBA. Sure, the SP has a backlight, which can be really nice, and it has a better design, but these minor changes are not worth the money. Besides, I can think of better things to do with my money.