Looking for best type of wood for mainly heat in my RF smoker. I have been getting mixed hardwood bundles and not knowing what is what when I smoke. I want something consistant. No trees near my area in ND, but about 150-500 miles away I can get firewood of ash, red/white oak and maybe maple. I want to try to stay with one type so I know what flavors I am going to get when smoking with the chips or chunks. So question is what is best type for all around wood for heating, slow and neutral flavor?