Its a tricky one - the GoPro is definitely the bulkier, but the fact that it comes with a really good waterproof case and loads of mounts etc probably swings it.  You have to buy a seperate case for the contour which makes it more expensive - then you still don't have any mounts.  Only thing is that the GoPro does have a few negatives - like saving in mpeg which means you have to convert the files before you can edit them properly.  Plus the filesizes are massive (lots of Gigabytes)!  Haven't used the contour headcam much so would be good to hear what others think...?

Its super hard to beat the GoPro and don't think I'd go for anything else now.  Only thing is I know two other folk who've had trouble with the GoPro hero2 - sounds like they maybe rushed it out for christmas though no doubt its awsome once the teething problems are sorted.

Thats interesting Scotty - I've just recently hit the issue of strange colouring etc.  I updated the firmware like you say and it all seems ok again now but its rocked my confidence a bit with it.  Annoyingly I had some awsome footage of skiing on Ben Nevis before Christmas on it which was all corrupted - had a hissy fit when I got home to look at it and realised!  Soon as it snows again we'll be going back to try to recapture the magic!  Also worth noting is that I had troubly applying the firmware upgrade - I tried to do it initially through GoPro's CineForm Studio but it wasn't applying the firmware patch properly at the end of the process.  In the end I managed to apply the upgrade by doing a sequence of button presses which I'd read worked for the GoPro Hero1.