Hi chicken farmer. I had a reply to your pm but couldn't get on last evening right after I typed it.. oh well, I sent it now so check your messages.
I have the black water evolutions and love them . I do have a 900 and these tires have served me great and I mean great ! the lugs are deep and hold up well the pattern is multidirectional so they can be swapped from side to side. the sidewalls are thick and they don't pooch out like the xtrs. I use 20 psi in my rears and 18 in front and have had no issues on my 900. I have way over a 1000 hrs on my set and the lugs are just starting to wear down on the edges somewhat noticeably .
Robin at All terrain on line is very knowledgeable and will steer you right. It is a family run business and he usually answers the phone .
I had wanted a different tire and he warned me about the weight and wear of that one for my heavy machine.
I had a lot of trouble with the xtr that I bought for my 05 from some other place .. If memory serves right I had 2 sets and the rears all failed. (came apart internally - lugs stayed good)
Also will add that the Black waters are heavy and have thick sidewalls as well as long wearing rubber on the lugs. The lugs clean out great and I should know after driving through wet fields and feed lanes but I never push it
collie