The Sony captured more of the room, and I also felt it had the better sound balance between the two. However it also displayed the limitations that many built in camera mics show - ok for voices, not the best option when you specifically want to record music. The Apogee, had more detailed repose throughout the frequency range, and was less tinny than the Sony. Piano sound was more focused in this sample. Unfortunately, it did seem to suffer more from clipping and/or compression. Might want to consider redoing this clip for a better comparison. Were the two recorders placed in the same position for the test? For music recording, it is best to turn off auto gain and compression effects. Set the gain manually before doing the recording.
Thanks for your input! The Sony was put about a foot away from the piano and the Apogee ONE was put on top of the piano. I didn't do anything with the gain and compression, it was directly recorded and then put in this video. I moved house and have a bigger room that my piano is in now, the sound is slightly better but still has a weird boxy effect for some reason.