I had low expectations of the Purgatory 2.3 on the 741's, especially on the rear, but so far they've been working well. I am planning on testing three pairs/flavors of tires: - a pair for lighter gnar riding (Purgatory or similar combo), - a pair for medium gnar (Rock Razor rear, 2015 Nobby Nic or Hans Dampf front) - a pair for heavy gnar (Maxxis Minion pair) I think chances are I'll settle for something in the middle as that's the most versatile and covers the majority of my riding too, but I'm interested to compare a few combos.