I currently use a XXX-Full (I believe this to be .665 could be wrong) Comp-N-Choke in my Rem. 870 Express / Turkey 12ga. 3in. Im fairly satisfied with its performance however i wonder if there is a better choke tube for this gun. I know this is virtually impossible without testing them but cant see spending 50 plus dollars per choke for equal or less performance. If anyone has tried this choke in comparison to others would like to hear ur opinion.