Yea, i've messed around with it. I switched from the Evo and had pretty good success with Fring and lousy with Qik. Now on the epic, i've tried video calling friends who have the Evo with Fring. They look pretty good, apparently my video looks terrible; super low framerate if at all and so blocky it's difficult to make out an image. We then tried Qik which had some interesting spherical abberations to the image coming through the lens but seemed to work better than fring (better/smaller compression).
I know that the evo has a 1.3megapixel ffc and the epic has a vga resolution (720x480) but that can't account to the major disparity between the two. Suddenly it hit me; that dang 3g upload cap i've been hearing so much about. To test the theory, I connected to 4g and yes Fring seemed to be working much better. Looking forward to this supposed 3g cap update today(ish?).
Just some info I thought might pertain to the convo.