That's a pretty rough tire for not off-roading... to get the hum back and still save some money, I would suggest Pro-Comp All-Terrain's for a couple reasons:

• first, they are rated as a "severe weather" tread and I personally think they handle incredible in bad road conditions (rain)
• second, these tires have a 50,000 mile tread wear length; that's pretty impressive for an oversized off-road tire
• third because they are significantly cheaper while still of great quality; I would hate to see you spend so much on a heavy duty off-raod tire and not be able to take full advantage of it

Yes, I guess I'm a little biased towards these because that's what I own, but to further the point those are the tires I plan on getting next, that shows that I'm just not bad-mouthing whatever you chose for preference of mine because I like those too, I just don't think they fit your application best.

Hope this helps, sorry it was so long...