Okay, I'll give this another shot.
A wrist support will help you keep a firm wrist while releasing the ball, and help you stay under the ball if your wrist is not strong enough to do so otherwise.
Which support to get depends on how much help you need, how much restriction of movement you need/want/can stand. Also, keep in mind that the more restrictive the support, the greater the effect on your span. Some of those robo-braces can increase your effective ball span by a 1/4", possibly more.
For minimal assistance, I like both the Ebonite Positioner, and the Master Wristmaster II Excel. The Wristmaster allows you to remove either or both of the metal supports (wrist and palm), while the Positioner does not (the supports are both sewn in to the glove). However, it was pretty easy to cut a slit in the leather, and remove the palm support (which I don't like) from the Positioner.
For more help, including a lot more auto-revs, I use the Mongoose Optimum, which Mongoose describes as the best of its Lifter and Equalizer products. It's very restrictive of wrist movement, and makes it difficult to throw straight at spares, but there's no doubt that it will increase your revs, and help you stay behind and under the ball.
If your serious about investigating wrist supports, I'd get one of both types (minimum/maximum support), and try them both in practice.
Hope this helps a bit...
--------------------
seadrive
Cogito ergo bowl