I have a SuperMid I've been meaning to post here. I know you asked for a Duo--I'm just tossing it out there in case you were waffling when you made the decision.
Yellow, 1 season old with ~12 or 13 nights of use. Most of those were at a base camp, so it's only been put up a few times, total.
Perfect condition as far as I know. If you're interested I'll set it up and snap some pics.
We can figure out a mutually agreeable price if the time comes.
Please hit me directly: mike dot curiak at gmail dot com