HI, Michael!
I have a DVRig Pro and wrote a review of it some time ago that you can find on lafcpug.org and kenstone.net (of course, not to detract from this terrific site).
I really like this product with the HVX. What I really find great about it is the ability to do lots of fine tuning with camera and back counterweight position to achieve a good balance. The belt and spring-pod provide more stability. It is not a steadicam and it is not even marketed as such. But with good balance and "steadicam steps", it is possible to get a very stable shot.
There is a new product that I tested this summer and will also get in November (the entire inventory was sold out at IBC and they are frantically producing more) is the DVMultiRig. This is a much more portable version and is the most versatile piece of gear I've seen. Check out the site at
http://www.dvtec.tv
On the DVMultiRig pages, you might recognize a familiar looking model. I say might because I'm close to 100 pounds lighter since the last time you saw me in LA.
By the way, I'm not on the payroll-- just one who has reviewed the first product and who will be writing about the MultiRig in another article. Feel free to contact me via PM or off-line if you want more info.
Ned Soltz