Avoid suunto like you would avoid herpes. Proprietary algorithm, history of denying problems with their computers (even in the face of a compulsory recall). There are other options out there if you're not sure about shearwater.
And yet they conducted a worldwide voluntary recall on their transmitters that one can still take advantage of today, where they test the transmitter, replace the battery, o-ring , and cover, and ship it back with two different flow restrictors, all at no cost to the owner...plus they offer a one year warranty from the date they conduct the inspection, and don't care if you are not the original owner of the transmitter either.
To top this off, I had purchased a battery and cover kit from Amazon to have as a spare for the eventuality of replacing the battery...this was before the recall so the cover did not have the "o" printed on it. My local dive shop gave their Suunto distributor a call and they were given the ok to replace the cover and o-ring in the kit for me.
Perhaps that should balance out their karma a little?
-Z