Yeah man, that was pretty much my realization. I am happy with all the boards. I have to make a choice by Nov 25 because that's when my $100 off voucher expires. I really don't think I can go wrong between the Cobra, Heritage, and Ultra Dream.
I think I read in a thread here that the Ultra Dream is a powder board that can do freeriding. The Cobra is also sort of a playful freeride board that is shaped specifically for powder. The Heritage is a twin shape (good for switch riding) and has a lot more dampening (which is good for when the snow is crappy/choppy) than the other two boards.
So one way to help decide is ask yourself where/when are you going to be using this new board? Personally, I typically ride park when the snow conditions are crappy as the groomed/raked snow there is actually decent... so while I was really eyeing the Heritage myself... MAYBE drop it off the list.