Your thoughts on Transporter Tires?

Unfortunately I have ST225/75R15 tires on my 5th Wheel. I need to replace the tires again. I was looking at Maxxis M8008 but then my tire guy said they have had good luck with a Transporter 10 ply tires in that size... and he said they are about $120.00 less per set. Anyone have experience with this tire?