The PSPgo first of all looks really nice, if u liked the pictures u saw of it, u will like it even more when ur holding it and playing with it...
the buttons are much much much better than the other PSPs, they feel right...and the same thing goes for the analog, its much better, its actually slightly heavier which can really help when playing games that depend on the analog stick...
the only thing that is of concern right now is the amount of games available on the store to download from but it seems like its expanding fast...
something that will be a problem however is other region games...in the older PSPs u can simply import UMDs but here since ur PSPgo is locked to ur account, u cant download from other regions stores...