Plus, for generations it's been Ford vs GM in North America (Mopar is a fair bit smaller).
For full size diesels it is now PowerStroke vs. Cummins vs. Duramax.
All have their fans and haters.
AdamB, if you want some reading material, check out the Lemonaide Used Car [HTML_REMOVED] Truck book for the truck [HTML_REMOVED] model year you are interested in. It goes through the flaws of all of them.
If you are working in Fernie, you might want to buy your truck in Calgary, lots of selection over there. That said, I've heard that to bring in an Alberta vehicle into BC, it has to pass the BC inspection to get it registered. I've never done it but heard that can be expensive if the vehicle has problems. (I've imported a US vehicle into BC and getting all the worn stuff replaced to meet the BC inspection was $$$$.