I'm having trouble with my wrist collapsing and am looking for a good support/positioner. My pro shop only stocks the Mongoose; so, I have been looking at some others online. Are there significant differences between models like Robby's Revs II, Storm Gadget, and Pro Release? It appears these all are geared to accomplish the same thing, but I'd appreciate any advice you one whether one is better designed than another. Also, is the Mongoose a good product (looks similar to the Power Paw)? Thanks.