Edit: typo - had a 3 instead of a 2 in the next line... 
My buddy and I each have a Commander 2 gas nitrox...
We got them a few weeks apart but with the same options so they arrived one serial number different from each other.
He's an instructor so he dives MUCH more often than I have time to but my Cochran has more dives on it than his due to the fact that he wears a Suunto nitrox while teaching as that is what our LDS sells.
I prety much wear my Cochran for every non-pool dive while he only wears his when we go out for deeper non-teaching fun/tech dives.
We both have been using older uwatec air-only computers we wear for backup/redundant bottom timers for those dives as well but he's retiring his uwatec as it looks like its last battery replacement didn't work out so well and I'll probably give mine to my nephiew as he seems to be getting interested in diving now.
I like the Cochran more than he does mostly because he doesn't like the software and the fact that you can't do dive planning with it on the desktop PC. I think it also annoys him that he sometimes has to ask me about setting options as he knows his other computer better due to diving it much more.
We are both interested in getting certified for trimix (both have had TDI-deco for about a year) and he is working on getting his instructor cert for deco.
We are both starting to look into trimix computers like the vr3/Nitek/abyss but have not come to any solid conclusions about any of them yet. The Cochrans will eventualy be the backups for whatever we decide on.

My buddy and I each have a Commander 2 gas nitrox...
We got them a few weeks apart but with the same options so they arrived one serial number different from each other.

He's an instructor so he dives MUCH more often than I have time to but my Cochran has more dives on it than his due to the fact that he wears a Suunto nitrox while teaching as that is what our LDS sells.
I prety much wear my Cochran for every non-pool dive while he only wears his when we go out for deeper non-teaching fun/tech dives.
We both have been using older uwatec air-only computers we wear for backup/redundant bottom timers for those dives as well but he's retiring his uwatec as it looks like its last battery replacement didn't work out so well and I'll probably give mine to my nephiew as he seems to be getting interested in diving now.
I like the Cochran more than he does mostly because he doesn't like the software and the fact that you can't do dive planning with it on the desktop PC. I think it also annoys him that he sometimes has to ask me about setting options as he knows his other computer better due to diving it much more.
We are both interested in getting certified for trimix (both have had TDI-deco for about a year) and he is working on getting his instructor cert for deco.
We are both starting to look into trimix computers like the vr3/Nitek/abyss but have not come to any solid conclusions about any of them yet. The Cochrans will eventualy be the backups for whatever we decide on.