I use a Velbon as well a CX660, it seems to do the trick for me, the only complaints i would have is that if you are using a telephoto lens u need a screwdriver to tighten the connection between the head and the camera otherwise the camera twists when it's in the portrait position, as far as build quality goes, its aluminium and plastic, isn't terribly heavy and seems to be more than sturdy enough for my requirements.
[edit] Hey look at that it's my 100th post