Having been through both, I think a TT is a lot more recreational use for the money, not just purchase price but ongoing expenses.
But they are used differently. A small motor, by itself, is a great travel vehicle and makes a decent weekend or short trip camper, if you have other means of transportation. A TT works better for taking it somewhere for a while, stting up camp, living in it, while you get around in the tow vehicle. To do this in a motorhome means towing or driving a second motor vehicle, and that combination means the MH has lost the compactness factor that makes it better for travel, leaving only the "I'm already in the house" factor.
I'm almost ready to go from MH back to TT, but there are still some RV roadtrips to make with grandkids, and for now I can haul a car or truck out to the lake with the MH, park the MH like a TT and get around in the extra vehicle. But I do know that this is costing me more, every time I fill up with fuel, pay the insurance bill, or take care of one of those little $1500-2000 "routine maintenance" items needed on a medium duty truck chassis.