I done and made my choice and purchased 4 Sailun S637 tires for my Montana. I may have done the wrong thing and I guess time will tell. I'll keep you posted if I have any problems.
This family of tires are marketed as regional all-position tires, however the 16" has a note that it is for trailer use only.
I find it a bit hard to believe that Saliun can get it right and Goodyear can not. Which brings us to the more recent G614's and if all of the problems have been resolved.