We have started researching as well. This is a bit further off for us but we're looking at trailers and fifth wheels as well. In talking to folks who have both, many seem to prefer the 5th wheel for the additional stability. They told me you feel the wind more with a trailer than a fifth wheel. As folks have mentioned, be sure to figure out how big of a fifth wheel you want as that will determine the size truck/towing vehicle you need. In addition, be sure to figure out the servicing costs of the trailer (dumping the tanks, propane, etc.), costs of storage if it can't sit on your property, insurance, additional gas if towing, etc.. It's those costs that actually have us holding off for a bit.