I'm confused by this. I know that there is a slight difference in tax for one of the values but I thought that was POP. In any event, I can't believe that the slight tax difference would add up to this total of $150. Perhaps a
AAA discount isn't available in one but is in the other (one might have already sold the allotment?). But whatever the deal...
I honestly prefer POP out of all of the values. I think it's just newer, nicer, and that is my preference (for what it's worth). I know that you don't plan to take WDW transportation, but I found that POP's transportation is much better/faster. Even with a car, I am a fan of taking WDW transportation ... if for no other reason than the high cost of fuel.
P.S. I just looked up the tax rates per the unofficial guide. The Allstars do have a 0.5% lower room tax rate than the other resorts as they are in a different county. So that can't be the reason for the vast price difference - FYI