Price is not an object! I sing my songs and record a steinway grand piano all the time. I feel that it is time for a magor upgrade in quality. I know preamps are just as important but I think I have that covered or at least enough to experiment with a nice microphone. Any suggestions.

Can anyone give me some hints on the best Micing techniques for a grand piano? I have two SM57s and two SM58s at my disposal for this purpose. The show in question is in a 365 seat auditorium and will feature a vocalist with piano accompaniment. Thanks!