Ok, This is what I wish someone had told me before I bought the Aqualung package deal. First off I bought the Zuma instead of the ProHD and it is at least a back inflate with a travel weight advantage and I got the Core which is a nice reg buuuuuut,,,, That was in November and now I have moved up to the gear that TBone recommended above and it is way nicer and for the BC and the regs, similar in price. When it came to a computer, I went all in because I knew I would anyway. I'm keeping the i300 as a backup, installed in a wrist mount from DSS. So two months, 33 dives and lots of online learning later and I now have what I should have gotten in the first place and I have a bunch of pop culture dive shop gear that I'll never use and If you want to buy it I'll make you a deal. Don't buy it. Do the smart thing and get the gear Tbone and others have recommended and spend a bit more time deciding on which computer to get. I would tell you which one I got but it might seem wicked expensive and yet is the money that seems most well spent of all of it to me. Perdix AI, ok there I said it. I bought a cheaper one and my wife looked at me and said, "why are you effing around, you know you will never be happy and then you will have a sale computer in a drawer that you never use and you could use the money toward the real one instead." There you go. What I wished I had been told back when I was listening to the LDS sales person. Bless her heart.