Have you guys considered a wood pellet grill? I have had propane and natural gas BBQs over the years and while they have their benefits... I won't be going back..
I picked up a Fast Eddy PG1000 and while I am not sure you can get them up here, I know that Western Fresh Air has the MAK Grills which are also pretty bad-ass.
http://www.makgrills.com/
I am not kidding, once you slow cook some brisket or ribs at 225 on a wood BBQ you just can't bring yourself to eat anything cooked in the oven again!
Be warned though, your back yard will smell like a campground year round, you will have neighbors poking their heads over the fence and you have to love the smell of wood smoke because it will permeate your skin and clothes.