i have a brand new set of comp trepadors (stickys). got them from a guy sponsored by maxxis. they were an extra set, i had cash, you do the math. anyway, back to the subject: i think ill like them, they are very sticky. havent used them yet. guy i got them from said i wont like them till i break them in. then ill love them. THEY ARE VERY STIFF! i think krawlers may be stickier, but these have thicker sidewalls by far.
on that note, my buddy runs irocs on the trail and i am really impressed with them. the difference between the 2 types are like night and day. the treps are stickier tread, but square shouldered. vs the iroks are more balloony and seem to flex on the rocks. iroks are cheaper.
so i guess there are too many variables to say one tires great and on stinks. my $0.02