A-Pop Century x 5 nights with dining plan and 6 day MYW tickets
B-Pop Century x 3 nights with dining plan, 2 nights at a moderate resort with no dining plan and 6 day MYW tickets-Cost is approximately the same!
I would have to go with option A. Even though both cost the same you have to realize that with option B you will be spending money on 2 days for dining which, depending on the size of family and where you eat could easily cost you a couple hundred.
My vote is for option A also. The less moving around, the better. You can always visit the resort restaurants and eat as you please with your fabulous dining plan!