I see that the OP lives in PA. Not sure if your near the Harrisburg/Lancaster area but if you are then send me a PM. I have owned three different rebreathers including eCCR and mCCR. I currently have a Meg and would happy to show you more about it and share the pro's and con's of the others I have owned. We can even do it at one of the local quarry's if your in the area.
John
John