Looks like advantage 2.1 are best for me on my XC wheelset for all round XC riding weight:grip etc. Upgrading from MK protections - have minions and roller FR and Rr on my DT5.1D setup and they are great.
The ZTR 355 are a narrow rim but thinking of running the Advantages tubeless? I did have a discussion last week on STW about Ardents but tehy seem much bigger and a bit heavier for general XC type riding?

