I have not used those sites. I have used floridaorlandotickets.net . They have very good prices. Check out the 5 day park hopper which comes with 4 plus options. They do not advertise that on the site, though. E-mail them, and they will confirm. Used them last year, and there were, indeed, 4 plus visits on each ticket.
Make sure you are comparing prices that have tax included. That can make a big difference.
This year I will be using Omar at Maple Leaf Visitors Info Center. He will beat any price. Here's his info:
Maple Leaf Visitors Info Center
4647 West Hwy. US 192
Located Between Hwy. Mile Markers 13-14
Kissimmee, FL 34746
(407)396-0300
(407)396-4127 Fax
Toll Free 1-800-841-2837
He is recommended by the "Guide to an Affordable Disney Vacation" (or something like that) which has been very reliable in the past. He will mail out to you at cost or you can go by (not far from parks - near Wal-Mart, I think) and buy tix in person. He is also offering the 5+4 pass for $245, all taxes included.
Good luck.