At typical HD ranges, choke is meaningless. Regardless of choke, the shot will hit as a solid mass up to maybe 20 feet.
10 yard pattern from my chokeless HD 870 is about 5".
IMO,unless you have a very big house, choke makes no practical difference. I'd would stay with the more open chokes, there's a trifle less kick, according to some experts, but I cannot feel any difference.
Hope this helps...