Hi Jeps
IMHO don't even bother with SCR, its a complete waste of time and money. I went down that track, purchased a Dolphin, and sold it 6 months later. Hated SCR very little benefit for money that could have been put towards the CCR. If it is anything like my experience the Dolphin almost put me off diving rebreathers forever. Compared to a CCR they are a pig to dive.
Here are the units I have had the opportunity to dive and a bit of a write-up on them
http://uwphotog.com/equipment/breathers.html
IMHO don't even bother with SCR, its a complete waste of time and money. I went down that track, purchased a Dolphin, and sold it 6 months later. Hated SCR very little benefit for money that could have been put towards the CCR. If it is anything like my experience the Dolphin almost put me off diving rebreathers forever. Compared to a CCR they are a pig to dive.
Here are the units I have had the opportunity to dive and a bit of a write-up on them
http://uwphotog.com/equipment/breathers.html