IMO- The titanium Scuba Pro is the way to go, light weight, simple but effective and corrosion resistant.
I suggest that you reach out to the guys at Scuba Toys, they do not have this knife on their website but they do carry it at the shop. Remember that you would get a discount for being a contributing member of this forum.

(972) 820-7667 Toll Free: (877) 728-2243
Fax: (972) 820-7521
Hours: Mon - Friday 10:00 - 7:00
Saturday 9:00- 6:00

or

info@scubatoys.com