I use a Northwind choke, dont think you can get them anymore, correct me if I am wrong.
I am using the Federal FliteControl #5's, in 3". I am very impressed with their patterning at 30 yds...very impressed.
I am going to invest in an Undertaker this weekend, wondering how much of a difference I can get.
Ps. Dont try using a ported choke with the FliteControls, it will ruin the pattern --->See Federal Website