i'm sorry but i must disagree with most people here... if you're going to use a snorkel, i would use just a regular run of the line J type snorkel with a purge valve.. (easy and simple to use yet very functional) when it comes to collapsable snorkels: think of it this way... you're at the surface, and you want to use your snorkel. By the time you pull it out, unfold it, clip it to your mask, you would probably be out of the water. and the same goes for if you're doing a surface swim : you swim out to the site, unclip it from your mask to put it in the case (at the same time you risk dropping it in the water) For the time vs convenience aspect, if you're going to use a snorkel, my recommendation is to go with a snorkel that you can use all around with a smooth 1 inch bore and a purge valve. to my opinion i think the collapsible snorkel is a waste of money instead for the same price i would opt for the akona Andros.
Menoncle