It just seems to me that if a trailer has a total of four tires it must be carrying more weight than a trailer with two tires. More weight translates in to using more gas when towing! Also someone mentioned the HiLo only goes UP! The TM goes up and OUT! More space. I have seen a couple of old HiLo's at a campground and they are small and bulky. One had trouble lifting the shell on old one and needed five people to lift it! Just my two cents!
Midwest Dave
Northwestern Illinois