Bests & Worsts Reviews from Amazon

I was concerned about all the poor reviews complaining about not being able to open the lock and messing up when you set the combination causing a lock that can't be opened. What I find is you need to understand this lock to use it well. Pressing on the shank resets the combination unlike normal master locks which are reset by turning several times. So if you hold the lock wrong while entering the combination you will be reseting it as you enter the combo and clearly it will not open. Secondly, you need to be deliberate when entering the combination especially when setting a new combination. A little care will prevent you from miss entering the combo. If you realize you might have messed up while setting your own combination, reset it before relocking it and do it more carefully. You want to hold the button firmly and move the button in the direction and back to center. Don't just let it spring back to the center because sometimes it will spring back so hard it goes the other way registering another move. If you hold the button firmly as you enter the combo you will find you get much better accuracy. I can open my lock 100% of the time if I do this. When I first got the lock I thought everyone was right, I could only open it once in several tries. I was using my thumb to move the lock in the direction and letting it spring back. Now that I grab onto the button and move it in the direction and back I have no issues. I like to hold the lock in my left hand making sure I don't reset it by pressing up on the shank. Then I used a firm grip on the button with my right hand to open the lock. One thing I like about this lock is you don't have to look at it while entering the combo. So it's easy to look around an make sure nobody is watching you enter the combo. You can also shield the lock with your hand as you enter since you don't need to see the lock yourself. The fact that this lock can't be shimmed open is also very nice. The only reason I don't give this lock 5 stars is I would prefer to see a more solid construction. I have read that the gears inside are plastic and the lock seems like it might be weak so perhaps easily snapped. I would be willing to pay double for a more rugged version of this lock. Another reason is I would prefer if they used individual buttons rather then a single button. 4 simple buttons for left, right, up and down would be very nice. This would prevent the issues with the toggle button springing back making it much more accurate to enter the combination.