One other thing, to do any serious video work on the laptops, even the top end models with larger screens, you really need to have a second larger screen monitor. So consider the additional cost if this is one of the primary purposes.

As for Canadian versus US pricing, it is minimal for the Macs themselves, and generally reflects the US$-C$ relationship. However, software is another matter, save for current sales on the Student version of OFFICE which is competitive. Otherwise, it is the GST and PST that makes for a greater hit on the pocket up here. If you can do a ground run to the US, you'll save enough in taxes to pick up a few accessories. (If you're after the full OFFICE, or even the upgrade version, AMAZON.COM -- the US site -- has the best prices, and are still eligible for the current Microsoft rebate.)

And yes, if you can wait two weeks, there may be a slight price drop as a result of new models, but I doubt anything major to the main lines already out, including the new MacBooks and the basic iMac. If anything, the major hardware change will come to the MacMini line, moving into the Duo2 Intel chip to conform with the rest of the line. Otherwise, it will be iTV that will be unveiled in San Francisco.