I've been watching this thread with interest because I have a full Q3 set and have often wondered if I was the only one to buy one - they hardly ever seem to come up in conversation.
I've had mine about 4 years and I echo what everyone else has said about it being a brilliant peice of kit. Even a finishing dunce like me can get great results with it. To be honest though it's wasted on me as I don't do painted stuff anymore, never really did enough to justify it in the first place, and don't have the space to use it anymore.
I've been toying with selling it for a while now, I even took a load of pics a while back in preparation for outing it on Ebay but never got round to listing it. I'm open to (sensible) offers.