Gosh. I can remember being out on Wilbur Plaugher's ranch with his older son over a mile or two from the nearest fence, with the ground fog starting...
All goes directly back to what your print image goals are. As previously mentioned many times now, figure out what your image goals are, then what LF...
I use homemade PVC tubes for my 5x7s and BTZS tubes for my 4x5s. I buff out the inside of my tubes every couple of years with the fine steel wool in...