Definately try a Pure Gold. They are expensive (bw 60 and 90 bucks), but carry a 30-day 100% satisfaction guarentee. So if you are not pleased with the results, or have another tube that shoots more to your suiting, they will refund 100% of the purchase price (just don't wait a month to test it out, or you will be stuck...but you won't be disappointed). So you either end up none the worse, save a sore shoulder, or with the best tube you have ever shot. You can't lose.

The Kick's shoot well also, but only go with them if you want to shoot LEAD ONLY!

Rhino's compete with PG for the crown of "best" turkey choke in the mass production class. Rhino's are more expensive than PGs (but not by much) and shoot not quite as good, or just a bit better than the Pure Gold's, depending entirely on the gun they are in.