One of the outfits I fly with purchased a Contour+ which impressed me so much I purchased on for my upcoming trips. I always wanted two cameras so I'll get to try it "side by side" with mty GoPro Hero HD.
It has 3 features that impressed me:
It has a GPS and the software that comes with it allows you to view a moving map when playing the video
Bluetooth interface so you can check the image from your iPhone (and hdmi out)
3 the camera and the mount looks much sturdier than the GoPro, resulting in less vibration.
The lipstick form factor is also a plus.
Hopefully some good footage for my upcoming trip for the videos thread.