To me..... fit and finish is important. I would consider a smaller 40-50 gallon tank if it looks good and fits well. I seldom make single trips of over 500 miles and the few times I do a portable tank in the bed for refills would work just fine. I'd much rather go through the hassle of dealing with the portable tank or finding grease on the road a few times a year than looking at a big ugly tank in the bed everyday of the year. I have no desire to install a big old tank in the bed of my truck that looks like... well, a big old tank.
