Definately go HD.
In my opinion there are only 3 cameras to choose between
1-the contour HD
pros:small, good battery life, rotating lense, good mounts
cons:the memory card is small like one you have to put in a phone, not an SD card. I hear that sometimes the back hatch can come open as well when not wanted, and unlike the gopro and 170HD there is no screen on the camera to line up the shot while riding only lazers to do it at home
2-GoPro HD
pros: good battery life, good mounts, good picture quality, weighes like 2oz.
cons-i personally dont like it cause of it's square shape
3-170HD by Drift Innovations
pros: uses SD card for memory, good strong build, light, rubbery cylicone feel, light, fairly good mounts, i think it has the best picture quality in low light and direct light out of the two, it comes with a wireless wrist remote to start and stop recording on the device, a rotating lense if the camera is turned sideways, and a screen on the side to line up/watch video.
cons:no suction mont came with the camera only a headstrap mount, goggle mount, handle bar mount, and some other mounts that can be secured with what i would consider dinkey velcrow. cause no velcrow is relable
Well i think you can tell by my 3 reviews which camera i own (170HD) but really i like the 170 alot and as for the suction mount which i really wanted i just bought a real heavy duty strong mount from RAM mounts for like $15 bucks but real high quality.