Those nano lines are great "utility" pieces, but are not the best tones. The nanosynth is adequate at best, and the naopiano may have a "slight" edge, but still - notghing to write home about. You get what you pay for, and they are very inexpensive sound modules. Look for a Roland sound canvas if you want a nice piano or a Kurzweil piano module - they are both small and have great piano and organ sounds.
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