I just found the Nexen Roadian HP at Walmart for $129/tire.

So roughly same price (tire & out door) as Nitto 420s from Discount Tire. Leaning towards trying out the Nittos- it's a pretty good price on that tire from the comparitive quotes I've been getting & seeing online. I've never had Walmart mount tires, but have good experience with Discount. I could also order from WMart & have installed at local shop. They might do great work, just not sure I'm ready to go to Walmart for work on my vehicle.