I've got about 500 miles on the new ascent on my 2010 tnytro. I like this track, it hooks up well and gets on top of loose snow really good. We have yet to get our big dumps of powder, so I can't tell if it is going to work as well as the C.E. yet. After 500 miles under boost I can already feel the paddles softening up a bit, so far I have not had issues with trenching. This track fits the nytro chassis perfectly, good cooler and tunnel clearance, no apparent need for porting.
Jeff