Always been a sony loyalist but I'll try to be unbiased for this review.
Was putting off on getting one of these since launch but im glad i finally have one.
obviously theirs no umd drive,so you cant use your old umd games if you had the older revisions of the psp,but theirs a ton of space (16gb,14gb usable) and depending on the size,with an M2 installed its possible to have 32gb (about 30gb usable) and their are plenty of games flying around on psn to download.
many people gripe about the lack of umd support,but imo its more convenient not carrying around ums and if you see it for what it is,a multimedia device,it looks more attractive.
The screen is much better than the older psp's,a little smaller but with the same resolution but looks more sharper and brighter overall.The control layout has had a bit of a change around,with the nub directly to the right of the d-pad and the start/select buttons to the left of the x,square,triangle,circle.surprisingly,the layout doesn't feel cramped or squeezed together and is actually more better to use,with vast improvements to the resistance and overall maneuverability of the analogue nub and the L and R buttons feel more responsive and satisfying to push.
i already have a psp (the 2005 launch 1003 model),and my library of games is quite large,but i knew i wouldn't be short changed getting this,and i don't think i would be so enthusiastic if I'd had an,overpriced,overrated i pod.
its fantastic to have crystal clear video,pictures music and a games library to be proud of in one device that's not hand cramping small,beautiful to look at and is easy on your bank balance.
If your contemplating getting a pspGO!,don't wait,get one,YOU WONT REGRET IT