The soprano demo sounds great, but I'm already spending time with Bela D's Vocal Tools Tenor and, while I'll give my full impressions in the review I'm writing there are a couple things that need to be said right off the bat.
First of all, I've been using Bela D Media's original Diva GIGA library and many other vocal sample libraries for years. However, Vocal Tools is really capturing truly expressive classical soloist performances in a truly creatively playable fashion that goes far beyond what any classical soloist library has offered before.
From my own work as a producer, I can tell you that one of the most important things you do when getting a recording (for sampling or otherwise) is to help the performer evoke what you're looking and shine against the microphone. Bela D has been raising the bar in that area and even if Vocal Tools Tenor had just been released as .WAV files, it would still be an amazing value. But it's programmed to be truly expressive in performance as well.
Put it simply: this is the first time classical male voice has been effectively sampled.
My understanding is that the classical edition will be a bundle rather than a full version of the Tenor or the upcoming Soprano. There is also a Bariton coming along I think. Maybe it will become eventually a boxed version once all singer are done separately as download.