Welcome aboard Scott. There is a wealth of information here for you to look at regarding rebreathers.
One thing that would be nice would be more information about what type of diving you would like to do with a rebreather.
If you ask specific questions, it is guaranteed that you will get answeres from the great people on this board.
I myself dive a KISS Classic Manual CCR. You might want to check out the new COPIS Meg if you are going the Meg direction. There is a nice article just out in Advanced Diver Magazine about that unit.
Have fun and welcome to the dark side
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