I use a Verizoom Aviator. It is an amazing rig and you can get awesome results from it.
It is by no means good for the casual porn shooter. The learning curve is great and you will get worse results with it than without until you learn it. Great for more pro shoots though. It is also for heavier cameras. 10-15 lbs is no problem.
http://www.varizoom.com/products/sta...vzaviator.html
