I've been running Nitto Dura Grappler since 2013. Excellent tread life and handling carrying our Lance 1181. Got them through Discount Tire. I like them better than the Michelin's, as the sidewalls seem to be more robust. This is a all season highway tire, but unless you do a lot of real off requiring a aggressive tread this tire is ideal. We see a fair amount of gravel, sand and mud but have not been let down with this tire.
Good luck.
http://www.nittotire.com/light-truck-tires/dura-grappler-highway-terrain-light-truck-tire/