I'm trying to decide on the next pair of tires for my Hammerhead 100X. Have had 2.1" Stick-E Blue Grooves for 1,000 miles, and they're still not worn out, but I'm ready to try something else. The Blue Grooves have been some of the best tires in my 15 years of riding- awesome traction all around. The only thing I haven't liked is their rolling resistance- noticeable on the trail and downright boggy on pavement. I'm thinking of trying 2.1" Nevegals next, but can't decide between the full Stick-E and the DTC compounds. Maybe not much of a difference, but I'd be interested in hearing people's reviews of them. I want to keep as much of the traction that the BG's had, while decreasing rolling resistance as much as possible. I ride 25 mile XC rides in NorCal on red volcanic soils & big rocks.