I use my heating pellets, they are primarily oak. I have used some LJ ones, apple, cherry, maple. For my taste it is all smoke and really can't tell much of a difference. Maybe that is because the pellet cookers go light on the smoke profile.
The GF isn't fond of heavy smoke, we went to a distillery over the weekend where a BBQ guy was to be setting up, had always heard great reviews and had been trying to get to him for over a year but things always came up. He was set up 2 miles from my house. When he uncovered the mac n cheese, chicken brisket and butt, I knew she was not going to be happy. The meat was way over smoked from a bad fire, it left a bad taste. She said this is why I like your stuff better it isn't so smokey.