Choosing a wrist support depends a lot on the type of release you normally deploy.
Many bowlers today rely on collapsing their wrist at release for maximum revolutions, including, but not limited to, the emergence of the 2 handed bowlers. For them, a wrist support would actually impede their ability to maximize wrist collapse, resulting in less revolutions being imparted on the ball. Therefore, a wrist support would normally be non-productive for them.
On the other hand, if your release relies more on finger (lift), like the "old school way", then having a firm wrist will enhance your ability to impart maximum revolutions at release. Here, a wrist support can help you out. I am not a big fan of the adjustable wrist supports because each adjustment changes your thumb-to-finger span distance. This can adversely impede your swing mechanics. I no longer use a wrist support but when I did, I preferred the Mongoose Lifter. It provided excellent wrist support with the least amount of restriction. (It is a non-adjustable support). If you choose a fixed, non-adjustable support, I highly recommend that you get your span re-measured with the wrist support on your hand so that it will feel comfortable when you have to use it out on the lanes.
Good luck!
