I an kind of the same boat your in trying to find a good medium priced 5th wheel. First off look this site to find out what your vehicle will safety pull or handle. RUSEF
http://www.rvsafety.com/rv-education/matching-trucks-to-trailers
After researching for a couple of years I been lead to the Northwood or Arctic Fox RV's. Try to see what people on the forum have to say about Arctic Fox for yourself.
The biggest problem I am having now is figuring out what is a good price for a used unit. The NADA pricing for RV is some help if little.
I am about to make a post asking for advice on pricing a RV.