BFI had gone all turbine, so it's only 99, 1900, and Metro, now with 1 embraer there too.

PDX flies about a dozen each of piston and turbine runs (all types) every day. If you want to fly out of PDX, ask about it specifically when you talk to HR in BUR. Try to get a promise in writing that you'll be assigned to the base.

PM me if you have other questions.