Why so many psp's

Why are there like 3 versions of the psp when they cost more n more and only have 1 difference O_o

Well, actually Sony just announced the PSP2, a complete remodel of the PSP.

http://kotaku.com/5201591/new-psp-due-before-christmas

They cant keep up with ds/dsi

so they try to make the psp look more appealing.

well, i guess a lot of people dont realize that there are different versions to everything. Like the ipod touch for example, some have the built in speaker, but some dont, and one has more memory. the name is the exact same but there are differences. its not like the ipod touch 2, its the same name with tweaks.

Ugh I hate that. It's so confusing. It's like you buy something without a feature you wish existed, and then the next day you find out there's another one with more memory and that missing feature for only $20 more. T-T

IS THAT DINOSAUR THING THE SCREEN? HOLY CRAP IT'S HUGE! PORTABLE NOTHING! It literally looks like a Playstation gone mobile.. The sliding screen is a nice touch.. but a touch screen on that huge thing? Uhm, not to sound rude or anything, but that's a bit of a copy gimmick, and the screen will be so dirty after touching it up everywhere. It looks kinda ugly in general and it seems bulky, but I like the big screen and the controls..
I sound like a Nintendo fanboy.