If you're trucking away leaves, I can't see how a loader wouldn't be the way to go. You'll fit more in the truck. That alone should be all you need to get one. By me town's take leaves so I only load 20-40 yards of unmulched leaves a season. Which would be two truck loads with a loader.
If I had to collect 80 yards of unmulched leaves each fall I wouldn't do it with out a leaf loader.