Lately I've done some stitched panoramas and I've been thinking that by adding a panning clamp to my setup it would be easier to take them, especially multi-row ones. So far I found the RRS PCL-1 http://reallyrightstuff.com/rrs/Itemdesc.asp?ic=PCL%2D1&eq=&Tp= and the equivalent Novoflex. The Novoflex costs $50 more and doesn't seem to offer any advantage and the RRS is not cheap either. So the questions are 1) does anyone have experience of these or similar products? Can you recommend them? 2) Do you know of a comparable cheaper product? The thing needs to move a DSLR (usually up to 2 kg, 4 lbs) with reasonably sized lens with ease and precision so models aimed for digicams are not suitable.