As far as suggestions I tried a few. The one I ended up with that I stand by now is the VISE brand devices. I have the V1 and my wife has the V2. The V1 has the little extra support up over the fingers for more revs where as the V2 is shorter and for more of a medium rev. Basically the difference was that on the V2-shorter one, the most cupped position possible out of four positions is 3rd on the V1. So there is one extra setting for even more cupping(more revs).
I tried others but in the end my wife had the VISE and I just kept noticing how well made it was, and so I got me one.
The only drag is you can really only get them through pro shops or ebay not really online much. But my wife bought one through EBAY and it's turned out great. I got mine at Pro Shop
Another thing I really liked about the VISE ones is the 1st setting is for a "broken back wrist," like when you shoot spares and it does break back about as much as you would without one so that was great.
I still plan on using mine regularly for a while and keeping it handy in case i feel that sharp pain ever come back.
For me, it was the best thing I had done. My wrist was bruised up and sore and this old injury kept creeping in. I found myself breaking back my wrist on the downswing which is bad.
The only thing I warn against is how well they work. It makes it difficult to go back to not using it because you get so used to it.