I have two machines with VTS the one has the new style that your describing, C pattern lugs. My other system that just got replaced with the Nex Gens had the old style like your old pair. I did not notice much if any traction difference between the two. The C-style does ride a little better with a little less vibration, but not a real big difference though IMO. I went with the Nex Gens cause I have always liked the asv track pattern, and that seemed to be the best option for the vts for a asv style pattern.