I give up, I'm getting sprockets at the local shop so I can ride next weekend. I've convinced myself to try an x-ring chain this time around, problem is the local shop has several models from $80 to $140 and I have no idea what the difference is aside from tense strength and brand. The $80 is an EK (or RK?) and the $140 is a DID. Which brand/model x-ring do you all recommend as the longest lasting? Thanks!