Jeff, nice to hear how much you enjoyed the Mozart. A very nice selection of the Sonatas, including No. 11, is superbly done by Perahia in a disc available here for very little from several Amazon sellers.

As you enjoy solo piano, you might consider what's probably my favorite work in the genre, the Albeniz Iberia. Unwin's fine performance is available from about $8 from Amzon sellers here .
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Enjoy the music, not the equipment.