Interior Space Questions - 5th vs TT

You can get a trailer that will meet the needs you describe in either version. The features will depend entirely on the particular make and model. I would suggest you do some shopping on line from a major dealership like RV Direct or RV Wholesalers (both have a fairly wide variety of brands available). Find some models that fit your needs then look around in your buying area for that model.
Good luck / Skip

Here are some suggested sites

http://www.rvdirect.com/index.asp
http://www.rvwholesalers.com/
http://www.forestriverinc.com/#&panel1-1
http://www.jayco.com/