Good idea to find an RV show, if you can, to see the various options. One recent issue of Trailer Life also had a few ideas. Sounds like you're generally on the right track, looking at the 14' TT or a truck camper (as long as you have the appropriate truck for the latter). Under 2500 lbs is a tall order for all those things; if you're willing to forego the fixed bed or the bathroom, you could consider one of the small teardrop trailers. Forest River makes the R-Pod, which is a series of small trailers; I think their smallest is a 17' model, and they have a hybrid option, which can work well in nice weather (even if cool) and if you're not camping in bear country. :) In fact, if that will be true for you, you might look into one of the smaller hybrids - full-height trailers with popup-style beds.
