I have tried most and still own most. Definitely prefer the OS. We tape up our legs just below the knee with a strip of duck tape. This stops the dragging in the water. With four plus months a year in a dry suit, I get 2-4 years out of a set of seals. The key is to put seal saver on all the seals almost every time after you use it. Also, I store it rolled up in a sealed bag between uses. It has to be dry when you put it in the bag. Â