For cold water. NITROX, and possible future tec diving an Atomic M1 1st and 2nd stage, a M1 octo on a yellow hose, and Suunto gauge console. DIN connection (yoke adapter for Al tanks).
For a back-up, and warm water recreational diving (vacations), a DIN Scubapro Mk25/X650, Atomic SS1 Titanium octo/inflator, and a Cobra computer w/compass. I keep a Yoke adapter in my bag for this regulator as well.
Both the Suunto gauge console and Cobra are on quick disconects so I can move them to either regulator as needed. Back-up computer is a Mosquito.