Excerpt: This works well on my Glidetrack which is why I bought it. It does the job it was designed to do. Obviously not as smooth and perfect as much more expensive units but it does well what I'm using it for.
Pros: Attaches Firmly, Good Stability, Large Range of Motion
Excerpt: Locator pin is not the spring loaded metal pin you might expect.It's a push-in plastic pin and it's way too large to fit the locator pin hole on a Pentax PF80EDA or PF65EDA II Spotting scope. Amazingly cheap part on what is otherwise seems to be a really nice head.
Excerpt: I got this with the 190XBPRO sticks. It is fine for say a 5D with a 50mm lens but if I put my 70-200mm on there it is a little bit overwhelmed. If your camera is small and light it is great but I'd probably get the 701HDV head instead. This one only attaches to the base on one side and when you tighten and loosen the drag it tends to sag to the side that is not supported. I use it as a head on my slider mostly now.
Summary: This is the highest quality head I've ever used. It is very smooth and easy to adjust quickly. It is, unfortunately, on the heavy side. I use it with my carbon fiber legs and it accounts for most of the weight of the system; however, a lighter head is not available that I know of, so it is the best option regardless.