We bought an Eclipse Attitude 27 TH that the label on the coach that was printed when it came off the line was 6755, and the gross was 9800. I pulled it with an 05 GMC 2500HD with the 6.0 Gas V8, and I felt it wasn't enough. Pulling in wind wasn't a problem, sway was fine, but the motor wasn't enough to be comfortable. It was 300HP with 365 TQ. I almost bought the EcoBoost Max Tow since it was 365HP and 420TQ which was a lot better than what I had, but still felt a little uncomfortable with the trailer fully loaded so I bought an 08 F350 with a diesel. I saw several towing tests with the ecoboost and they did awesome. I figured if we ever want to upgrade to a 5th wheel we could with the diesel and not the F150. Just food for thought. My guess is if you are going to stay under 28' the EcoBoost should do you a decent job, but to have the ability to upgrade go diesel. The diesel should also do better MPG towing.