There are a few tricks that you can do with an upright which don't work so well with a grand. One of my favorite's is to mic the back of the instrument. Not only does this alleviate player noise and instrument bleed, it also tames some of the harsh frequencies that accompany short strings and small cases. Surprisingly, the sound from the back of an upright is usually not muffled at all. The percussive sound of the hammers is still evident, and an extra bit of from the exposed sound board can add a nice depth to a recording.