Not even considering a Steadicam?
I've had a Varizoom for months now, but other than one evening, I haven't given it a fair shot. First thing I noticed is that it won't handle the weight of my VX2100 (camera wobbles side-to-side as you walk), so I ordered the extra weights they recommend.
But my biggest complaint probably goes to all of them - it takes too dang long to mount and balance the camera. I could never use this thing at a wedding. Until they come up with quick mounting plates, like tripods have, these things aren't practical for event shoots and weddings.
Someone once posted in these forums that you can get a quick mount/release plate for the Varizoom, but I've never found one.
There's a fellow often featured on WEVA who specializes in Glidecam. He does some nice work.