Originally Posted by
WJH
Without doubt the heavy duty ones, they last much longer. But cut them so they are still tight, otherwise they will leak enough to get you wet to the elbows. Expensive? Yes, until you compare to shipping your suit somewhere to have a seal replaced; throw in the disappointment of missed dive/s and they are a bargain. So to take advantage of the feature you must buy 2 sets and keep a spare set on hand. This is much more economical when your buddies also dive DUI, as you really only need a pair of seals to back up several divers on a given weekend.
WJH