Well, I tried a different way of cooking for the pellet grill. I've cooked pork butt on there once for around 12 hours or so and it was good tender wise but it just didn't have enough smoke flavor. This time I cooked them for 10 or so hours on the stick burner since I already had it going for a brisket. Then moved them over to the pellet grill for 4 or 5 more hours. It tasted so much better smoke wise.
The key to better smoke is buying good 100 percent pellets. Most of the pellets have filler.
Personally I do not like a heavy smoke though.. For me smoke should enhance the flavor not be the flavor.