I'm not a big fan of the Scubapro regs. They breate well, but they cost too much for overhauls, Mares has a similar problem and I don't have any LDS near me that services them. I'm a big Aqualung/Apeks fan. If you can't find Aqualung, what about Sherwood? They make stuff that will last through incredible abuse and keep on coming back for more. I've used sherwood unbalanced piston regs that are older than I am and for the diving I was doing (down to about 80 feet) at the time, I can't say it was all that bad.
Depends on the diving you're going to do. 2HP ports really don't mean anything to most people. I've never used more than one at a time myself.
My thoughts on regulators is that very little on the market today is going to be "bad" as long as you stay with some kind of established name brand. Cressi-Sub has a new line of regulators out that I hear good things about and they are very reasonably priced.