After 9 years with our Outfitter Apex 8 which we really liked we decided it was time for a change.
We wanted more space, more comfort, more convenience, bigger bath, walk around bed. There are bigger TC, but in the RV world, any TC is still small. We went with a Sprinter 25 footer with two slides one is a walk around queen bed.
The Sprinter is mobile but its not a TC, that is the only downside. It will not go off road.
The Sprinter has probably 3 times the space with about 3 feet in additional length. We looked at 5th wheels, but we tow a boat and will tow a Ranger PU for going off road.
Every square or cubic foot in a TC makes a difference, In the Sprinter, we have breathing room.
In the back of my mind I think about one of Outfitter's little units for the Ranger PU.
Good luck.