I had the great fortune to go to my local Steinway dealer today to select a concert grand for my organization to purchase. While there, we got to discussing mic placements for use in a jazz band setup. The head concert technician shared a technique that he has found works great, and eliminates all action noise, while giving a balanced tone and isolating from the rest of the band.
Take a pair of SM58s, and aim them right into the 2nd and 5th holes in the plate, as numbered starting at the keyboard end of the piano (right to left as shown in the image here).
I haven't tried it yet, but he said that it gave better results than all of the specialized piano mics he has ever put his hands on.