Clinton,
I use a "Wide Mouth" canvas bag from Lands End. Unfortunately, they don't make them anymore. It's basically a wide mouthed, old-fashioned satchel, but it's been one of the best bags I've ever had, and has stood up to amazing abuse. It's big advantage is that the mouth opens wide and stays open, making it very easy to find anything quickly. Mine holds a guitar stand (or 2), music stand, music, Harmonica case (the Fender one that looks like a small briefcase) tuners, misc other crap, and best of all, zips shut and slings over my shoulder, leaving my hands free for guitar cases.
Blues