We should start with the oldest member of the PSP family, the PSP 3000. Oldest meaning the design and look is virtually the same as when the PSP debuted. Little has changed to the overall design on the new PSP 3000. The PSP 3000's features include a 4.3 inch display. The newest feature just announced is the addition of a built in microphone. This allows the PSP 3000 user to use Skype to make phone calls over wifi. The UMD slot is in the back which allows you to swap out games and movies, saving your sd memory card for your pictures and your music collection. If you have access to wifi you have access to the web. The PSP 3000 allows you to access your favorite websites as well as connecting to Sony's Playstation Store.
The PSP Go removed the UMD slot in order to cut down on the bulk as well as making the PSP more energy efficient. Bluetooth is supported with the PSPGo so you can connect your blue tooth headsets to not only watch movies and listen to music but use Skype as well. The PSP Go comes with a 3.8 inch LCD wide screen display. The screen slides up to reveal the game controls and slides back down when you are not playing any games. The PSP 3000 needed sd memory cards. The PSP Go however comes with 16gb's of on board memory. Wifi allows you to purchase and download content directly from the Playstation Store.
The PS Vita at first glance is shaped roughly like the PSP 3000 but look closely you will see important differences. The PS Vita offers some important features that the other PSP's cannot match. PS Vita features a 5 inch OLED screen. The OLED screen makes it the brightest and best looking screen in the PSP family. Sony added two camera's on the Vita one in the front and one in the rear. PS Vita users now have a multi-touch display to use. You will never be lost again with the PS Vita in your pocket it comes with a built in GPS to help you find your way. Gaming is being enhanced as well with location based gaming allowing you to find other PS Vita gamers virtually. While all these features would be enough all by themselves Sony decided to make the PS Vita just a little bit better. Vita owners no longer have to worry about finding a wifi connection now the PS Vita has 3G connectivity. The internet is always at your fingertips.
While the other PSP's have great features and are certainly worth considering you just cannot over look all the great advantages the PS Vita has over the PSP 3000 and PSP Go. A bigger brighter display with a touch screen as well as front and rear cameras all make the PS Vita an incredible upgrade to the PSP family.