Warning!!! If your planning a trip anywhere...

[perogee]

I have limited experience with either (and in their .ca forms), but the experience was ok. I had some problems with expedia with a car rental, but they made everything good when I whined enough (I ended up with a better deal).
From what I have read, I guess I would advise calling directly to the properties to confirm bookings far enough in advance to deal with any problems there may be.