A few observations: the Steinways in the basement of Steinway Hall in NY, like most everything else in the building, are for sale, no matter what lofty claims the management may make. Steinway is in the business of selling pianos and I assure you they will sell any one in the building. You just have to know whom to ask. And yes, the pianos in the basement are much more thoroughly prepped than the ones upstairs or in the Queens selection room. The discrepancy is sometimes astonishing. I visited both places last fall and was dismayed by the state of the pianos in the showrooms: poorly regulated and voiced and often out of tune, while the ones in the basement were, by and large, quite good and some were extraordinarily beautiful.
Steinway is just too cheap to spend the necesary extra money to prep their non-concert instruments adequately. They're hoping you won't know the difference or, if you do, won't realize that you can and should demand that they do the extra work at their own expense.
I was also appalled by the arrogance of the salespeople at the New York store: they act like their product is so superior that they don't need to be nice to you. I mean, demanding your name and address before they'll even let you in--ridiculous!--and then only grudgingly showing you their pianos, like you're not worthy.
By the way, I'm the owner of a New York D and a Hamburg C! I'm a known high-end customer!! I wonder how they treat other people? Actually I already know the answer, because a friend had a similar experience not long thereafter.
I had a much nicer experience at Klavierhaus, on "Piano Row". The guys there are VERY knowledgeable about their pianos and very pleasant to talk to as well. And they keep their pianos in much better shape than the posers at Steinway. Their Hamburgs and Faziolis are really superior instruments and I felt like they'd let me play them for hours if I wanted. I'd go there if I was in the market for a used Hamburg Steinway or a Fazioli.
The folks at the Steinway showroom in Hamburg are a lot nicer than the ones in New York, which is interesting because their pianos are MUCH nicer too. The ones in the selection room on the Rondenbarg are uniformly well-prepped, all beautifully regulated and voiced. There's no double standard there.
Well, I'm still a fan of NY Steinway pianos, the good ones anyway. I just wish they were more consistent in quality.