I have the opportunity to purchase;
an Xt wheelset (M775) for a little over $400.
a Mountain Sport MT65 wheelset for a little under $300.
Since I ride in very wet conditions, where water will go over the hub 2 or 3 times, I am concerned about the quality/number of seals on these wheels.
Having read the reviews for both (mtbr.com), I glean that the difference is mainly in the seals, the XT (M775) having a better seal system.
Looking at the exploded diagram for each (attached) I do not see any difference in the seals between these 2 wheelsets. The ONLY differences I see is a slightly differant locknut configuration on the non-drive side and 9 ball bearings (MT65) vs the 13 on the XT (M775).
Is this the extent of $100 plus difference between these 2 wheelsets, just the ball bearings?