I know an amplifier will not draw a steady current, but for most people of typical knowledge and opinion there going to go by what the amps rating since actual power draw is always going to vary at any given time, and no amplifier will be 100 percent efficient. The jh1200 is sitting at 82% efficient and the polks are in the mid 80's as well but im switching as of now to the PA 330's and running them at 2 ohms since i can pick up the 330's for 45 bucks a piece and the pa 660 would cost me 100 each. So now were looking at 1600 rms.
For the battery a good portion of it is because that is what my audio shop is recommending plus im getting the stinger yellow top 1000 for 120 bucks i hate worrying about whether or not ill kill my battery if i shut the engine off. Its pretty embarrassing when your 2 grand system leaves you stuck in the parking lot. The second battery and an isolator will be a big help. Plus it will make wiring changes and amp switches easier.
Looks like ill probably be picking up the subs and ordering the amp as of tomorrow. So ill post some pictures of the subs soon. I've managed to get my hands on the RE SE 10D4's instead of the SEx subs. So mine were made in america and they will hold up a lot better than the cheaper looking Chinese made SEx subs.
