Re: 5th wheel or travel trailer
For my 1000 post, I would say most full timers do use a fifth wheel. I believe it is the fact that most people have grown to a fifth wheel by the time they go full time. Also, a full timers trailer is usually large and a fifth wheel WILL tow better than a large travel trailer. Storage is also a large factor and like Chelse states, the fifth wheel will have more storage.
However if you want to start out smaller, the Sunset Creek and Brookside lines of SunnyBrook have very high insulation factors, enclosed underbelly's, porcelain toilets, a lot of floor plans have neo-angled showers, Aluminum Frames, 5,200lb axles and a LOT more. Check them out. If you want I will be glad to help.