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I use these often, and the stock Rhodes sample that comes with PCMsynth. The trick I found is to tweak the sounds myself. Adding reverbs and adjusting the knobs on the sample editor can do wonders. Also I found that adding an additional sample to blend the original, for example: copying the melody from the Rhodes track and adding a Modular sample with the same melody but turning the volume down so that it compliments the Rhodes rather than overpowering it, can do wonders too. I love this stuff. Enjoy!
https://play.google.com/store/apps/details?id=com.soundblend.electricpianos