underwater navigation system

[azwarian]

hi guys,

im a fairly experienced diver with exceptional navigation skills

however, as I am planning to head overseas and work (instructor) / travel, i will be diving alot of different sites in different places, so navigating effectively and consistently is a possible concern

ive heard anout the divetracker scout/sport and also the tamin (xios) navigators.... just wondering if anyone has had any experience with these that can offer feedback, or knows of any reliable alternatives?

any help or advice is much appreciated

thanks a million!