Well I just made my reservations for my trip on Monday to Vancouver.
At first Boundrey Bay airport looked like the better option, lower
nightly tiedow fee, no landing fee. However, when you call about
rental cars you find out that one guy has the exclusive rights to
provide cars via Budget and you cannot use any type of discount. He's
charging $60/day!!, $300 for 5 days PLUS TAX (yes I know that
Canadian)!!!
I got a car for 1/3 that price at Vancouver intl, which will more than
cover the higher nightly and landing fee. Also, customs and the FBO at
intl are 24/7 so I don't need to worry about stopping for an late
minute lunch in Oregon or such (not to mention the benefits of an
ILS).

-Robert