26" 1380 gram Carbon XC wheelset
The Easton ARC 30's are the widest rim on the market.
Stan's Flow EX rims are one of the most popular All Mountain options.
The Pure V Shimano XT 26" mountain bike wheel set is both V-brake and 6-bolt disc compatible.
The Sun Rhyno Lite is a known rim. It has been known for decades.
The Pure XDisc 29er disc rim is a great upgrade starter wheel set.