Good package, good price, a real bargain when on offer.
The Ravel piano isn't bad but it's my least favorite of the four instruments.
I bought the complete package because it was cheaper than buying the two individual instruments that interested me the most: Electra 88 Vintage and Waterfall.
The vintage Electra 88 has a good timbral-dynamic response.
If you're looking for the sound of the early Rhodes (not the "ringing" sound of the late Mark I), this, for me, is the best.
The Waterfall sounds good, but its limitation is that, even with the cleanest possible setup, it always retains some saturation in the sound.
The PolyMax synth seems ok to me, but I still need to get to know it better.