I have the
X9mi. it is essentially the same product as the
X9i with the following additions:
Red Backlight in lieu of Green
Adds MGRS (military Grid Reference system)
Adds mils to
compass mode..
My choice was motivated by the fact that I wanted a Black bezel and a negative display.
I have had mine well over a year and love it..
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 | Compass |  | Compasses are sensitive, absolutely crucial instruments to precision navigation. The earth's magnetic field, inclination, and your longitude and latitude all influence the horizontal plane of a compass needle. As a result, compasses are balanced for different geographical zones. Suunto Compasses overcome this limitation to traditional compasses by using a simple 'Two Zone System'. With a Suunto Compass, the only 'balancing zones' are the northern and southern hemispheres. In addition to this innovation, certain Suunto Compasses come equipped with useful features like luminous needles and marks, centimeter/inch scales, magnifying glasses, clinometers, sighting notches, and more. | |  |
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