I have a Gitzo tripod (2530) on order, and am looking at RRS ballheads. My 80-200 has the standard Nikon collar/foot. I have an L-bracket for the D200 (and will probably pick up a simple plate for the D70). The 300/4 has a Kirk collar. I am interested in the BH-40, and was considering the LRII model, which is a lever-release clamp. However, RRS has this disclaimer on their website: "NOTE: Choose a Lever Release clamp ONLY if you have quick release plates from Really Right Stuff or Wimberley. Lever Release clamp are not user-adjustable, and different manufacturers may follow different standards when producing Arca-Swiss compatible plates. Specifically, our Lever Release clamps do not work with plates from Markins, AcraTech, Arca-Swiss, and some Kirk plates–the dovetails are too shallow. Choose a screw-knob clamp if you have plates OTHER than those from RRS or Wimberley." So.......do I need to sell the Kirk collar and buy a RRS collar? Based on looks, I happen to think the Kirk collar looks more solid. Anyone else combine Kirk collars and RRS QR level clamps?