Helmet cameras...

[Anchorism]

I use a rollei bullet hd.  Love the camera!  Much smaller in size and very aerodynamic... Thus the reason I stayed away from gopro.  Only downfall I see in my cam is the microphone I guess.  Haven't quite got the wind noise down where I want it. Look it up though rollei makes great cams! I mount mine on the trellis, my helmet, my bars, wherever really! No worries about bulkiness.