I've tried 6+ after-market chokes in my Ithaca. The best patterns I can get are with the Carlson tubes, either the X-full (that came with the gun) or with the Carlson LongBeard XR (.660).
I have not tried an Indian Creek, and probably won't unless I can find one on clearance somewhere. I'm killing birds with the LB choke at 50+ yards in open fields, I can't see needing better...