Personally I've always been partial to
Mr Ray. Yes, it's free, or donationware or whatever, but it's also the warmest, purest electric piano sound in my arsenal. I like
Lounge Lizard for it's versatility. It's great at making messed-up sounds (in a good way) though for a straight Rhodes type sound I find it a little "plinky".
I have
Neo Soul keys on my ipad which is awesome. Scoff if you like, but it too is warm and inviting and is undoubtebly the same samples as the plug-in version.