I use the Contour+2. I like the built in GPS function which you can view after recording to see what routes you've ridden. Very helpful in remembering what roads are good for riding. Here's a shot of the setup I have with the Contour+2. It has a 2.5mm audio jack which works perfectly with the Drift HD external mic... you get crystal clear audio with it and its probably the best setup for vlogging if you're into that stuff. Don't let the image quality if the last picture deter you, I set the recording quality quite low because I was just testing the setup on a ride focusing on the position of the camera. What I LOVE about the Contour products is that the lens can be rotated so you can mount your camera at any angle and still get a horizontal horizon. It also looks pretty cool on a helmet... you don't end up looking like a teletubby.