For recording, I'm not sure I would look first to one of those solutions, which can be great for live sound. I'm sure they could yield acceptable results, but...
a good old pair of U87s would probably be preferred (for me) the majority of the time.
I realize a pair of 87s is probably double the cost of that Earthworks system, but you might have them (or at least one) already, and even if not, they could certainly get a LOT of run on things besides piano.
But a lot of mics can work great. Placement matters a lot, depending on what you want to go for.