Poseidon does not produce a regulator with a swivel on the first stage.... Having said that, I have been using odin/jetstreams and cyclons for years and they are great. I have not used the extreme, but I'm sure they are good too
Did not know Poseidon did not have a swivel on the first stage, thanks mate
Do I really need a swivel? My local dive center recommended it, but they were talking about dual system...
Finding a regulator is quite hard...