I have some minor experience with a 1150GS in soft sand which convinced me on buying the much lighter XC - and I don't regret it, as it allows me to go anywhere I want with what limited offroad experience and expertise I have.
Check out this report
for some more dune riding on a XT660Z Tenere:
Originally Posted by Ni3ous
We need to get to the lower ground seen in the distance, and tomorow we head over some other dune sections.