Hi-
My XTC came with a pair of 36H CR18s, which aren't all that heavy for a tough rim (440g).
But with my weight, light load and riding (commuting as unfortunately didn't get a chance for a laden getaway yet) a lighter wheel can be safely used.
I believe Mavic XC517 were the lightest option Thorn offered.
However, XC517s are not being made anymore. You see used wheels on "fleabay" and I am keeping an eye out there.
Are there any other common lightweight 26" wheels that are easy to find secondhand and that are reliable?
(I can get an Alexrim etc, but I know Thorn picks their parts for a reason)