im looking for something for my mtn commute and autoX

Im looking for around 15K mile life at least. My current ones are dead on the outside, and im on 1.5 max camber, they are still good on the inside.

Im waiting on a deal from my friend at school, i think im getting RS-2s but i dont know if i should order 45 or 50 profiles (to save 2 lbs)

 

for your purposes i would go

615 > rs2 > mx

of those three, ive tried mx and rs2, both of which i liked. mx sidewall is softer but cornering stability seemed to be better, maybe just better overall grip than rs2.