If I'm at home, I'd have to go with either a burrito from the local taqueria or a bacon cheeseburger (with Sriracha or chipotle mayo if they've got it) from a local burger chain down the street*.
If I'm at work, either a Mondo Burrito from Taco Del Mar, a footlong from Subway or a double cheeseburger from Wendy's.
If I'm on the road in the PNW, I'll go to a Burgerville- otherwise a McDonalds or Taco Del Mar.
*I've got a small drive-thru only burger chain called Frugal's right down the street, so that's where I get my fast food burger fix. Leagues above McDonalds, Jack in the Crack, etc... and about the same price too.
(PSA: I've got nothing against any of those places, all are good- but you can't beat local and fresh. "Jack in the crack" is what my boss calls JITB. He loves their tacos)
At my old house, I'd go to Dick's Drive In for a burger. Cheap, crappy and greasy... but oh-so delicious.