I use a CR Speed. Although I am very happy with it, it can be unstable. The gun is held in place by a plastic trigger "lock". When you unlock it, it has less tension on it, but can get knocked out of your holster with little effort. So you develop a habit of continually checking the locking mechanism, when not on the line to shoot. I have replaced my trigger lock with an Arrendondo unit. It is even less stable (a trade off) but allows for a smoother, and hence quicker draw. I like the adjustability of the holster, but probably would lean towards a DAA unit next time around.