Poly choke. Screwed down to a bit tighter than full but not much. The beauty of this is that I can buy a pile of cheap shells on clearance after season ends, and adjust the choke shot for shot until i hit a sweet spot then dial it in for the best/most consistent pattern.
Bet you guys with the fancy schmantsy screw in doomaflotchies can't do that.
I have a 12 and a 20 with polychoke. I will buy a 16 if I can find one with a polychoke. I really like the flexibility. I will admit that I bought a truglo titan once on clearance and used the snot out of it. Sold the gun and the buyer paid extra just to get it because he thought it was the next big thing in shotguns...even though they were common years ago and kinda flopped.