PSP GO much more greater, nice screen, great game, hyper video (hardcore gamers) - alot action games than usual NDS don't have
- pricey
- huge memory space
- bluetooth connection

NDSi which provides better camera built in and screen more clear than the previous - alot casual games, rpg, tactical turn based (which I heard they provide free download games on NDS)
- affordable price
- alot games than any consoles.
- using less power