-I usually stick with a 2.35" folding bead DTC tire for all around trail riding. (DTC lasts longer than Stick-E)
-If I were riding chunkier stuff up where the Scrub rolls...I'd most likely be on a slightly larger 2.5" tire with a FR casing for the bigger drops and rocks.
-If I were to ride up in the Pacific Northwest with the elderly...I'd switch to a 1.8" semi-slick non-UST Stan's converted tire and run it at around 20psi for comfort. 15 is a little too low for a 200lb'er like me.