My take on this is that the Double Prong is the best bet overall. Each design however, has its pros and cons.
Between the single prong and the double prong. The single is the easiest to use, obviously. However with it comes a greater chance that it might come undone in some freak occurance. The double is more secure obviously, but a little difficult to get off after a lift.
The lever is the best IF you can get it set right. The problem that most have is that their waist circumference will vary greatly from day to day..due to water weight. This is especially true of heavier lifters. So for that fact it is more difficult to get it adjusted consistantly.
Between the single prong and the double prong. The single is the easiest to use, obviously. However with it comes a greater chance that it might come undone in some freak occurance. The double is more secure obviously, but a little difficult to get off after a lift.
The lever is the best IF you can get it set right. The problem that most have is that their waist circumference will vary greatly from day to day..due to water weight. This is especially true of heavier lifters. So for that fact it is more difficult to get it adjusted consistantly.