I've only used lock-on's a couple of times. Once I was in them, they were fine, but I absolutely HATE having to climb up climbing sticks. Being completely vertical instead of angled like a ladder....just don't care for it. Plus ever set I've ever used, the steps were way too far apart. If lock-on and climber are my only 2 choices, I'd say climber, especially if you're having to put it up/take it down every time.

I still prefer ladders over everything else though. 15' is about as high as I care to go.