Which game you are interested is on which platform. Go for that one.

IMO, this may be the last gen of handheld consoles, as their shares of pie are quickly consume by iOS/android devices

even now 3DS and PSP has outsold PSV in terms of their weekly sales in Jpn.
and US is already changing the pre-order packages for PSV with more goodies

even now I hardly touch my NDSi and PSP anymore... both has been collecting dust ever since I got an iPad2 and a Galaxy Tab
even my kids which usually fights for my NDSi doesn't touch them anymore, and fights for the iPad

for the ios/android tablet, we love the portability and the multitask-ability of it, bigger screen, cheaper, more casual games, better batteries life and so on, but i still miss the button smashing on portable, which the tablet can never emulate with its touchscreen.

So, how long can the handheld console last????
will this the last generation of it?