19% off on Amazon coins. Figured that's as good as it's gonna get for now and finally pulled the trigger. Got the 40-pack bundles for Whispers and Mean Streets as well as One Night.
Haven't fiddled too much with the Mean Streets stuff as I'm having too much fun running C'Thun in every deck (quite n00bish, I presume). However, I'm a big fan Spiked Hogrider. He doesn't seem to be anything too fancy, but he's single-handedly turned things around for me on more than one occasion. Granted, I'm only playing Casual, but he's come through for me when I really need him.