What is the difference between Glidecam 4000Pro and 4000HD?

Thanks

If you are still looking for a good reliable stabilizer take a look at this
Indicam (http://indicam.dyndns.tv/indicam2/)
Check out the product comparison and the pricing. It's hard to beat.
And on top of it Terry provides fantastic customer support and he's a regular here on this board. I bought a system (Sled, Arm Vest) from him a year ago. The reason I bought from him was all the other comments I saw about his customer support and the fact that everyone who tried it loved it.

Good luck,
Jim