I cooked two butts for a group of 17 this weekend and they turned out great. I probably could have used another hour or two, but it was getting late and the internal temp was 188 so I pulled them. The meat was tender and juicy. I thought the hickory smoke flavor was pretty good but i was surprised that the smoke ring was not very pronounced. I used a decent amt of hickory, but reading tonight i learned the smoke in the latter stages of smoking probably didn't do that much. That's one thing i haven't figured out is how much wood I should use, how frequently to add it and when to stop.