I use a .665 Indian Creek with a 23" barrel on my 870SM. Best pattern with H13 3.5" #7s is 324 in a 10" circle at 40 yards. With this combo I have killed two birds at 56 yards and one at 53. Each time I misjudged the distance.
Out of the 2 chokes you mentioned id go with the Jellyhead. IMO a Jellyhead is the best bang for the buck on the market.