Thanks everyone! Just bought my first set of doubles...seeing as how I am a small guy I bought double HP 80's to start...yes I will get more and more and eventually spend my life savings on everything. I'll definitely start looking into rebreather information...but I will have to read a ton on them and test a few out before I am willing to start looking into one particular type....yet another $10,000 magically disappearing from my pocket..hmm...the fiance won't be to happy, but I should buy it before she has a say on what leaves my wallet and when..(just kidding)