Well the HC2000 is equal to the D2700 in size, but the smaller D6500 in power. So, if you are looking for a battery to fit the same physical dimensions, then the D2700 is the one you want.
I was looking to about the same power. A few guys on these forums recommended i get a HC2000 for my system of 1500rms. The battery will be going in the trunk of my car, so physical size is not an issue. I am looking to get about the same power if not more. Looking for the bargain buy between the 250$ Kinetik HC2000 or one of your batteries which would be equal to that. I will check your price list after this post since its on the first page, if you could let me know what would have about the same power as the HC2000 thatd be great. I am just looking to get the best bang for my buck! I appreciate the reply! If your prices are better for the battery I need compared to the price of the kinetik i would like to get the ball rolling so I can pay you through paypal within the next couple of days! THanks again!