I think it really depends on what sort of games are your thing. Myself I think if you're a casual gamer you should go for the Nintendo DSi. It has a bigger library of games available for it from puzzle games, brain trainers, shooters, and RPG's. I myself have a DSi XL (coz Im getting older and my eyesight is waning), a PSP, a DS light, Gameboy SP, Gameboy Micro. You could say that Im a handheld junkie, and am hanging out for the Nintendof 3DS, and keen to see what the PSP 2 will deliver as well.