http://www.aquatictech.com/pumps.html towards the bottom of the page, Mag Drive pumps and Air pumps (AP series). Best price I've been able to find, and I've spent alot of time searching lol.
Funny i was about to buy two of these at the local hydro shop a few days ago but decided not to because they were way to expensive. I just ordered 2 2400's from that site for the price of 1 at the local hydro shop, with a 30% discount included.... They try to sell the 2400 for 330$ =x!!!! I just got2 for 300!!! Hope there not to big for my 12xxxl's