I am a lemming!!!
Nice John. I would have followed the rest of the herd off the cliff of audio doom! I would have picked the 4050 left, 58 right.
Um, I feel the need to make a little point though, not so much for you, but for others that may not have thought of this.
We still don't know which mic was placed above which side of the hammers. This could actually make quite a difference in results. A great test would have been to reverse the mic positioning and post another mp3 of that!
Also, everyone should remember that each mic likes to be placed differently from another mic to capture the "best" sound (please use "best" within context and not literally). The response of every mic is quite different, and placing two different mics even in the same spot could give misleading results as to their appearent quality because the "lesser" sounding mic may have sounded much better in a different location.
There are considerations too about "what" sound you would like to have, and how that sound might fit into a mix with other instruments. It is well known that sometimes intruments that sound great on tape by themselves may not work so well when other instruments are added in.
Very fun test though John, and thank you for posting that. Was this recorded with that very nice looking piano and in that gorgeous room in that last studio you designed? If so, that room sounds every bit as good as it looks!
Good Day!