btseek

iPad2 running with dual-core A5 1GHz Processor but iPad only running a single A4 1GHz processor, iPad2 have two cameras one at the front and one at back that support Facetime which the ipad doesn't have cameras and no facetime support. The iPad2 is more thinner only 8.8mm with 2x faster processor and 9x in graphic...etc.
Personally, I have a iPad and ipad2 in hand right now, if you use the ipad for web and reading that is good enough, is no reason for you upgrade. I do use my ipad2 for web using it not even an hour  and the back side of the iPad2 is getting pretty warm...