If you buy it from Dell, make sure you go through the Airmiles shops link. 2 X + 20 X Airmiles until Dec 5th.
I am looking to upgrade my Macbook, and score enough Airmiles for a flight to Toronto. It is one of the best Airmile deals I have ever seen.
http://www.airmilesshops.ca/shops/ai...MS-20x-BF&seg=