I've had the GR on the grizz now for a year. Good trial, rock, and snow tire. Can't say I see all that much mud to commet.
Also did put 13,000 miles on a set of BH's that were on my rincon. Great tire the BH is but I do like the Reaper better.
GR's just seem to let u slide in the corners more. In the snow the BH seem to push the front end when trail riding fast in the snow. GR's don't.
Putting Reapers on my new xp le this week. GBC make a good tire for the $$
Oh, its almost frickin impossible to wear out BH's
13 850 HO XP Blue Fire, 3,659 miles (Mine)
09 700 Grizzly, 25" Grim Reapers, Grip warmers. Flare Windshield, Rox Risers w/Solflex Bars (Hers) 8,125 miles
2010 Tundra (ours)