My best results have been with Expedia or just booking separately myself. AAA has the unlimited fastpass which seems like a really nice thing to have. I always get better rates at the Disney hotels thru expedia. For example I called today and got $156 from Disney for November but could get $130 thru Expedia (room only).
The AAA unlimited fast passes used to be w/any AAA ticket purchase but now is only if you are buying whole package including flights and stay at a DISNEY hotel only.
My experience has been that online rates for hotels are much better than either AAA or Disney Co....and I can buy a pin for $6-8 in the park instead of the ugly free one they give you.
Unlimited fastpass means you can hold one fastpass for each ride. Whereas you usually have to wait either for your return time or two hours from when you get the fastpass to get another one for that or any other ride. We had friends who had this type of package in June and raved about it. Sounds nice but since we have AP's we don't get to take advantage! Hope this makes sense.