Thinking about getting a TC, but seems to be more costly???

For me it comes down to towing ability. I use a truck camper because I want to be able to to a pretty heavy trailer, so a TT or 5th wheel is out of the question.

However, "Likes to tow" is correct about the wife; I took mine to some RV dealers and looked at some 5th wheels just for fun one day... she went right for the 40-footers! I've been trying to get her to understand that the ones that are huge on the inside are also huge on the OUTSIDE!! Tow it? I don't even want to think about washing it!
I may be doomed.