There is never a BEST tire for anything. Towing, if like myself, I towed my old TT to the mtns as a ski hut. So the tire choices you mentioned are no good! I went with more of a true traction tire. If you are on hard roads, desert SW, then michilin xps ribs or equal are the best design. If you get more off road, you may find the Cooper AT to be the better design tire.
For me, Any brand BUT a michiblow or equal, IE the latter three tires you mentioned. The BFG;s are ok, but the traction is not what they are held up to be imho. The traction version is better.
Make sure they are round and balanced frankly. After that, its a **** shoot as to what is best per say, all depending upon driving habits, where etc.
Marty