lets not get into a which carrier is better here, BUT bell got he curve 1 year after everyone else, the only different between your curve and mine is a little more memory, and a tad faster network, the faster network is useless unless you have the processing power to handle it, and the curve doesnt even the CDMA ones dont...
I have used the video camera on the 8310. The video is a bit choppy if you move the camera to fast and not the best quality as well but it gets the job done thats for sure better then any phone i ever had. Must have a SD card to be able to use the camera though. Requires the video files to store on. avarage 1 min video is 2.3 mb.