I bought an MD80 clone from
Ebay for under £12 and have been astonished by it. Although the resolution is way below my ContourHD, the difference in sharpness and detail resolution on a 24" PC-size screen is marginal. If anything, things like car number plates are slightly easier to read than the ContourHD. It also handles low light conditions far better.
Disadvantages - the Ebay clones have a date stamp that can't be removed, the battery isn't replaceable for long use, recording will not automatically resume with a new file after the 4gb fat32 limit is reached and the build quality is very flimsy. Viewed on a large TV the lower resolution is very apparent compared to the ContourHD. However, at a fraction of the ContourHD's price, these are trivial criticisms.
The video hardware in my clone, spca1528, seems to be the same as the version 3 keyring camera described
here Case is obviously different but everything else is very similar
Anyone thinking of a ContourHD should bear in mind that mine is the 720p version - footage I've seen from the 1080p newer version looks a lot sharper and has very good colour balance. The ContourHD is also much more rugged so you do get what you pay for to a certain extent. Also, I must emphasise, my MD80 is not the Veho Muvi , just a clone in a similar design case.
John
[Edit]: The MD80 can also be used as a webcam. I used the driver linked from the keyring camera webpage and it worked fine on 64bit Windows 7. Plugged it in, pressed the Mode button, let Windows sort out searching for drivers and that was it.