I've got an ATC2K (which is pants at night), but I'd really like to work out a way to fit a forward and rearward looking camera setup, with a split screen feed into the recorder. Actually, I know how to do this, use a ChaseCam SS1000 or XM-DVR Pro recorder, but I don't have that sort of money to play about with!
The Hero Wide does give a very good view, much better than things like the ATC2K, I think the wide angle seems to be more representative of the wider view that you see about you when cycling.