OkByMe
Contributor
- Messages
- 599
- Reaction score
- 202
- # of dives
- 500 - 999
I use the same second stages paired on the first stage for primary and backup sets. I'm usually breathing off the long hose and that would be the one to donate. Both are held in place around my neck on a bungee loop and ether one can be easily pulled loose from the bungee.. rather than try to get it off over my head in an "emergency". I use MK25 and S600 (a pair) and my backup reg is MK25 and G250V (a Pair). I swap them around from time to time to check them out. Who wants to breath off a sucky second stage? AND by having the same (MFG) first and same (MFG/Model) second stages, I only have to carry one parts kit for field repairs or I can cannibalize if it becomes necessary. The S600 and G250 use the same parts. Same goes for all your tanks... Pick a valve and stick with it.