First of all, Ravel is an excellent piano that can be used in combination with vocals, and no one will have any doubts that it is a real piano. I have never encountered a piano with such a high level of detail and excellent dynamics. It is undoubtedly my favorite instrument with an amazing hall! The Elektra 88 is also an uncompromising instrument with a wide range of instruments and settings. Since I've only tried Waves before, I can say that UAD is much better in terms of sound quality and allows you to implement any idea, and most importantly, make the tone fully ready for mixing without additional processing in the channel or bus. B3 also has its own advantages, and I'm not sure exactly how it compares to other B3s, but the built-in rotary mechanism definitely makes Uad's instruments unique in their approach, immersing the user in the engineering aspect of the work and making their sound unique.