i see people selling psp 2000 and 3000....whats the difference? what's the ultimate modding that you can do to a psp cause i want to do it to one when i get one or buy one thats already like that. i want to never buy games again and rather just download and play them. what would be a good price for a used one and yeah which one is better psp 2000 or psp 3000? im looking to buy it off craigslist.