of course a ps vita psp are getting old
the go is pretty cool with a better portable size than most of the psp's but on the other hand the ngp is way better, also addign that I'm not sure what the cost of the ngp is so trading in the go for the ngp would lower the cost so I might... unless you are really attached to the go.
no
no it well not have any umds.
399 $ to 499 $
I think you should buy the 3DS. the 3DS has advantages over PSP go, the 3DS is 3D, it has a 3d camera, quite a bit of preinstalled software, and the 3DS will have some good games on it, Like Metal gear solid 3 remake in 3d, Dead or alive dimensions. by the way there will be another PSP to be released soon, so far called PSP NGP, PSP NGP should be better then PSP go. so Look up more about 3DS and look up about PSP NGP and see which is best.
the next generation portable or ngp.
Yes, the 3DS is much better than the Sony NGP, because of its better games, better grip, and 3D screen.
The NPG will come out during the holiday season(around Christmas)in 2011
There's Psp 1000, 2000, 3000, Go, NGP {Next Generation Portable} or call it Psp 2 and if this is the same for the others there's {Psp Slimline & Lite}
2011 some time i think its April to September probably
Its Called The PSP NGP (Next Generation Portable) Its Coming Out In Holidays 2011 Heres How It Looks Like: http://blog.us.playstation.com/2011/01/27/next-generation-portable-ngp-all-the-early-details/?utm_source=facebook&utm_medium=social&utm_campaign=NGPTech_12711 click
The NGP is coming out between September to January