The scenery I'm using now for the region is Orbix/FTX NA Blue Pacific Northwest
http://fullterrain.com/index.html, which covers the area from south of Portland to just north of Vancouver, and goes inland for a few hundred miles. It's great detail for low/slow flying. They do a good job with most of the small airports too. The airport shown above is Pemberton, which is probably not much of anything in stock FSX. If I just flew jets, I would probably not bother with it, it's about $40. Two new areas are being developed to extend further north into the Alaska panhandle and further east over the rockies. These too will cost extra. It's hard to beat for bush flying in the area though. If purchasing, I would consider the boxed version. The download is huge-4gigs, and their server can be very slow at times.