Bit the bullet...I really didn't want to spend the extra money unnecessarily but I was just not confident with the Sailun, Hercules or Hankook options. Couldn't find a dealer to order the Sailuns...even if I mailed ordered them I would always be wondering as we traveled down the road if I made the correct decision. The Hankooks are only good for 3330 lbs a little shy for 7000 lb axles and I received a lot of negative messages regarding the Hercules. Alas, Camping World has my $1200 for GY 614's. Right or wrong, I do feel a little more confident with the GY tires.
Best Wishes!