Now question is who runs 135 rear with 83mm BB and how's chainline working for you?
The reason I'm asking is I do like idea of 951 with 135 but it uses 83BB.
I'll assume you have a 135 wheel and don't want to lace a new one. I'm not sure about the chain line. I think I would either get the 150 wheel for the 951, or go with a 68/73 bottom bracket DH bike like the blindside or similar. Just my 2 cents.
I usually go through a rear wheel a year. (East coast is hard on rims) I like to keep everything 135 so I can move wheels between my double, m1 and nomad. Getting a new bike this year looks like a demo 8 or 951