So far all of the gear you have mentioned would fall under the category of pro-sumer equipment (not the best quality at all). Try Apogee ensemnble with a nice multichannel Pre. Or some of the portico gear is quite good and is half rack so it's compact. A lunchbox with some nice pre's and good quality converters could be the go too.

Its piano recitals. Anything with a clean front-end and decent gain structure will work. It will eventually all come down to mic placement and selection. You say you are using Audio-Technica so things could be fine depending on the models.