How much difference does the type of wood make? I have only used mesquite and hickory and have never had a side by side comparison of the same type of meat at the same time so dont really know how big a difference there is. I have some apple wood but have not used it yet. If I did 3 boston butts at the same time in 3 different smokers one with hickory, one with mesquite and one with apple all with the same rub how much different would they taste?