I highly recommend OLD Steinways that have been restored by REPUTABLE restorers. Like all crafts, piano production has its fluctuations. The same year can produce both wonderful and lacking instruments, depending on who worked on each instrument.
There are current restorers who do FANTASTIC work on all vintage pianos...not only Steinways. Dale Erwin out of Modesto, California has made fantastic improvements to soundboards, adding ribbing, cut off bars, etc...to make the sound board far superior to anything ever offered by Steinway itself.
In Minnesota, there is a GREAT restorer of Steinways, Ken Hannah, who can turn a worn out train wreck into an absolute perfect piano in every way.
There are charlatans out there...from personal experience, I could not, in good conscience, recommend David Andersen out of L.A. I purchased two pianos from David and both have been completely fraught with problems and David Andersen's customer service is non-existent. He lacks integrity and character and I, personally, have spent my last dollar on his product.
That said, Ken Hannah in MN, Dale Erwin in Modesto, CA, are the best in the US. They are able to acquire old pianos and restore them to beyond full glory.
Much like driving a new car off the lot, it depreciates immediately. The older Steinways (and others) are made from the oldest woods...simply not available any more. There's no comparison to today's instruments and those of the hey day of piano construction.
I currently am playing an 1898 Steinway C with a soundboard by Dale Erwin. My local technician has successfully regulated the instrument so that it is an absolutely astounding instrument.
Wholesalers offer many of these premium pianos for cheap....10-20 thousand. Your piano can be customized to your specifications.
Food for thought.