I had the 8300, then the 8310 and went to the 8820.......for a few days. I was really missing my 8310 for it's size. the 8820 does seem a bit more solid but you feel that too. It feels like a brick compared to the 8310. The WiFi is cool and a bit faster than EDGE but I can wait til RIM comes out with all that in a smaller version. I'm back to my 8310 and the 8820 is going on ebay.