What type of truck do you have to pull it? The bigger you go, the bigger the truck that is needed. iI have a 5.5 X 10 and it works great. I pull it behind a 2003 FORD F150 and can't even tell it's back there. Can run 80 mph, and get great gas milage. Whatever size you get you'll love it...it's nice to have it just to store things in while not in use, etc. Good luck!

PS - look at "crashedtoys.com" they have a 25' on there right now for $5000.00 !