DH and I looked at acres of TT's yesterday. Head still spinning. Seems like 5vers are taking over the towable market. Regular TT's didn't seem to be as nice or as well built as those I saw in early...
If you are going to be driving much as a FT, scratch the TT off your list and move on to the fivers. OTOH if you are only going to break camp a few times a year, you can ignore my advice. It still applies, but won't come into play as often.
The reason I say the above is that a TT with the size and amenities you want is going to be much more work and "adventure" to tow with than a similar fiver. In my experience.