What kind of towing vehicle should I get for a 26ft bnkhs

New or used?
New I would order or look for a 2016-17 F150 Super Crew (BH means you have kids) with the 6.5" bed, 3.5 Eco and 3.55 gears. I would also buy a really nice weight distribution hitch with built in sway.
Used I would opt for a 3/4 ton gasser of choice.
Main reason between the two is payload. The newer F150's have a higher payload because of the aluminum bodies. Naturally a 3/4 gasser will have a high payload. It's harder to find a 1/2 ton with enough payload for that heavy of a TT plus a family and gear.