I wore a pair of Dexter SST1's for 8 years, great comfort/durability.
I wore a pair of Dexter SST5's for 2.5 years, good comfort/much less durable than my previous SSTs. Inside lining ripped out, gold coloring flaked off (maroon/gold) model.
I had seen other odd durability issues with SST5's and the first run of SST6's. So, I bought my Tour Ultras thinking they would be more durable and just as comfy as the Dexters. After 1.5 years, they look like new and are amazingly comfortable (like a pair of slippers). I love 'em.