I've gone through a gambit of tires racing AMRA desert series in AZ. I've used MX 51 (not good) MX 71 (better) Starcross (love this tire too).
First I used this tire on my 450x with a tubless system installed running 8.5psi, This tire has had absolutely no holes or near flats (with slime showing) and I have only one knob with a chunk after 5 races averaging 2 hours. I use this tire on my Motocross track practices off season.. and my complaint is that it gets uber traction to the point of side bite pulling you out of a rutted line. Which can be unsettling at speed.
I don't use the desert IT cause with tubless no worries about tube pinches. It finds traction in silt, sand, ruts, rocks, and found out on cactus as well.
One tire has lasted 5 races, three months of practice, 2 months of decayed granite riding. Same tire for 15 months and still have just under half the knob height left.