I've had these poles for three years. The flick lock system is second to none. It cranks down with plenty of force on the pole, and doesn't take bloody fingers or pliers to lock or unlock.
Lock tension is easily adjusted using a knife, spork, stick, rock, or even fingernail.
However, of all recommendations I can add... it would be the time I was heading up toward Thunderbolt Pass in Kings and was walking from one talus boulder to the next. I slipped slightly, my pack caught me off guard, and I began an awkward recovery so I wouldn't fall off the talus. I quickly caught myself on my trusty Leki poles, and watched as one slipped between two boulders and proceeded to bend nearly ten degree as it caught my weight. I pushed my weight on to the pole and regained balance. The pole still looks brand new. From that moment forward I was committed to Leki.
Best poles around. Period.