The RRS looks nice, but I have a couple of Kirk QR mounts for the two heads I'm using, and the Kirk looks fine, too. The RRS seems to be intended to be adjusted depending upon whether you are using a Canon release or not, allowing a lower side profile if you aren't using the remote release. The Kirk will work with the release without moving the mount, but it seems like the side is thicker to accomodate, and I'm not sure I'd like that. They are both the same price. Which one should I get?