More than most likely, all these bulk blends are re-named Lane Limited tobaccos. I would ask the shop owner what his bulk blends are and what their stock blend names are. I would bet one of the ones you enjoy is "1Q."
Unfortunately, not knowing what those house blends are or what is in them, makes it pretty hard to recommend much...My stand by recommendations for new pipe smokers are always Carter Hall, Prince Albert, Samuel Gawith Full Virginia Flake, Orlik Golden Slices, Dunhill Early Morning Pipe, McClelland's Frog Morton, and Rattary's Red Rapparre.
Once I know exactly what you like, I can pin-point more blends for you based off of style.
Cobs, Cobs, and more Cobs. You can never have too many cobs my friend. I have plenty of briars, and I still reach for my cobs more often than not.