PSP go or PSP

A pspgo uses only digital tech and cannot play UMDs so they become obselete so i'd go with the psp-3000 series as it is usable for umds.Eventually!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
the UMDs will become obselete as the other user said, I would go for the Go because then you won't have to buy a new psp in a few months/year.

Anyway, I got a psp go and it seems quite good.

I think the psp is better. the umd wont become obselete for awhile and games for the psp go on playstation network are about 40.00 usd