User Review: Black Diamond ATC
Price Paid: $16
Very easy to learn and get used to, but you really have to be attentive as a belayer (which should be the case, regardless of the system in place). due to its simplicity, you are sure to get consistent performance (have tried 3 different units of this model, one of which is old).
Same goes when you use it to rappel. Very smooth, never got me worried, which makes me pay attention more the locking/braking parts of the system.