The Black Ice is a real nice bow, and no doubt you should be able to find a bargain if you pick up an 07. Personally I prefer the Binary cams over a single cam but that is just my personal preference. No doubt in my mind the General is Quieter, and more shock free. Also a plus to the Binary cams is you get the option of Smooth or Speed mods. It really boils down to what You want and what you can comfortably spend.
Good Luck with your choice!! Both are nice shooting bows!

Dan