Another option is to get the King ISO rear hub with the Fun Bolt axle. This is a more heavy duty axle with threaded inserts at the ends for the fun bolts. You could also spec the stainless steel drive shell (more weight, more $$$) but my alloy one lasted about 7 years on 2 different bikes before giving me any problems.
The 823 rims are bomb-proof. Those are the ones I run on my Intense. If Mavic offered an 821 rim (i.e. a rim that sat between the DH-oriented 823 and the more XC oriented 819), it would be a good choice for a rear.