I 've always used Wrights chokes. Very effective. I don't know if you have a bore gauge but if you do, give him the bore size and he can recommend a choke that will ink ball targets for that barrel.
My 2 cents
Well,my favorite is my Carlson Full choke,,it broke my first 25 this past August.But,I do use the Midas Chokes(briley makes for browning)it help me hit the Long bird the same Night I had the 25 straight with the Carlson.Only reason I changed from the Carlson to Midas,was because the Midas Full choke is a tad tighter than the Carlson,and it was for the money that comes with hitting the LONG bird.
Whatever's cheapest... usually Tru-Lock. Unless you get a wonky choke, I doubt you'll ever be able to tell one from another either in the air or on a pattern board. Spend your money on a good shooting clinic; playing "choke-or-the-month" will make you poor, itwon't improve your shooting and it will build you a collection of chokes you won't know what to do with.
Brileys, I too like the Midas Grade extended chokes. You can get them from Browning and also from Briley themselves with there name on them at a bit better price tag than the Brownings. Good Luck and Break-em all. Jeff