Yes, I am in a bit of quandry about this age old question. I am looking at a Steinway Long A from the 1920s. It was totally rebuilt (new everything) in the Steinway restoration factory on Long Island in 2005. A technician suggested that i have it checked out at its location, since Steinway was "not always using the best parts" for restoration until just a few years ago -- and he wasn't sure if they switched to better parts before or after 2005. I am going to search for a technician in the state where the piano is located, but in the meantime, for my own edification, can anyone comment on his comment? Also, I understand that while the Hamburg Steinways use Renner actions, the U.S. ones do not. Difference? Should I care? Once I have established that the piano is in excellent condition (whatever that means), I will go and play it before purchasing. I am fussy about the action and the voice. i assume a good technician could adjust both to my liking. P.S. The complete restoration was verified, in writing, by Steinway.