I've had both...6 travel trailers and then a 5er.
And for the most part the 5er will have more room for storage under the master bedroom AND more cubic feet of interior space..which helps you from going "stir crazy" and limits the claustrophobia attacks too! ;) And since the 5er will have a good percentage of it's length over the bed of your truck...the towed length is shorter.
The 5er also pulls better, doesn't need "sway bars" or other towing enhancements....it tracks and pulls great. It handles well in the wind or when passed by a huge big rig. Holding and fresh water tanks are often larger too.
Backing one up is different...not in a bad way...just different and takes some practice.
I had a short bed truck with a Pullrite Superglide hitch pulling a 30' Jayco and could make a U-turn in a cul-de-sac with ease.
Look at the Northwood Nash line of trailers, better insulation than most, and I like Jayco because of the quality of the build, fully insulated laminated construction and 2 year warranties and the family that makes them ha 46 years in the business!
