I have a pair of Black Diamond Trail Shocks with flip locks. Yeah, I know, a lot of folks think the shocks are just a gimmick and I wouldn't argue one way or the other. But, I like the fact that they are quiet and adjust out to the length of a walking stick which I probably use 50% of the time (packing the other pole). But when I'm climbing, it is hard to beat 2 sticks. Talus is correct, the grip angle is important especially when climbing and/or descending.
