I was going with the Wimberely F-1 because I found one at auction, but I slightly underbid, and it went for almost what I can buy one new. So now I guess I will need to buy a new one unless I can find another at auction real soon. I've looked at the Kirk, but unless they have changed the design, it requires a tool for mounting. The Really Right Stuff B-series brackets look very cool, very functional and well-designed. However, the Wimberley might be better overall because of its portability and flexibility of height adjustment and configuration. Since I don't have access to either of these items for trial or examination, I would appreciate any feedback as to the pros/cons of these two flash brackets.