I think those words describe best strezov choir wotan (male choir) and freyja (female choir)… what i like the most with those choirs is that you can creat your own words by morphing existant syllables… now there are on sale !
Well let me say it this way: I have got 8Dio Requiem, Liberis, Lacrimosa, EWQL Symphonic Choirs + VOTA, Soundiron Mercury lite, Performance Samples Oceania, Bestservice Mystica & Cantus, Fluffy Audio Dominus and Strezov Sampling Storm Choir I & II Complete, Tropar, Arva, Wotan, Freyja and Rhodope II.
I started long ago using EWQL Symphonic Choirs as the very first I ever had, then came 8Dio Requiem Pro . While you could get good results with Symphonic Choirs in situations where you just needed a shouting choir behind a large orchestral performance and epic tracks it did not work as a “naked” choir at all. Requiem pro on the other side offered a very good sound and great vowel legato stuff, but the phrasebuilder was far too limited and also too bulky to use. With quite a lot of work you stil can make it sound very well - especially if you only need the vowels. For that it was really good. Also the FX were and stil are useful. Here is a short example that shows EWQL Symphonic Choirs Vota in the first minute and Requiem Pro from minute 1:03 - 1:48.
8Dio Liberis also had a very nice sound and I used the vowel legato and FX quite often in the past - the problem with the limited phrasebuilder was the same as in Requiem Pro. Here an example how nice the vowel legato worked:
From my other choir libraries I especially liked Bestservice´s / Tarilonte´s Mystica Female (medieval) Women´s Choir which had very nice legato. It also had limitations but for a more ancient sound without legato (which I needed in many medieval / celtic inspired tracks) this is exactly what you need and for that it is stil my library to go:
Medieval Sacred Demo
Atonal Avantgard Demo
Later I purchased 8Dio´s Lacrimosa mostly because of Michal Cielecki´s awesome demo and the marketing, but I have to confess that the product really disappointed me. What I liked where the fast Syllab combinations, but the normal legato was absolutely not of my liking and I also found that due the totally excessive number of singers the choir sound looses all its nice details which makes it sound even weaker than a choir with just 20 singers - its simple psycho-acoustics.
Now here I found out about Strezov Sampling and their Storm Choir I and II aswell about their Tropar. After listening to the great SC II demo by Adam Hochstatter I purchased SC II and was quite happy with it. Later i went for SC I once it was on Sale at I think vstbuzz and found out that I liked SC I even more than SC II because it works so well just right out of the box. You can write fast passages (not as fast as with Oceania but stil very fast) and also lyrical passages. A true timesaver and a very helpful and inspiring tool. The auto-syllab option aswell as the stacking was very nice. I am stil using this one. Here is a track that i have written featuring SC I for a micro-job (the solo voices in that track are the ethereal voice from Tarilonte´s Forest Kingdom II and ERA II Vocal Codex).
After that I purchased Wotan and was really blown away by it´s great sound and usability. Here is a track where I tested it on different criteria: Playability, sound standalone, sound in orchestral context, word building (lending the consonants from SC II).
Because I liked Wotan that much I decided to go for Freyja and Arva aswell - especially after listening to Oschmann´s, Raynaud´s and Hochstatter´s Demos for these libraries. I didn´t regret these purchases. Maybe expensive but very, VERY NICE! I also purchased Rhodope II because for ethnic stuff this is just a nice alternatice to the normal sounding choirs. Its just more ancient and raw with it´s throat singing style tressenet (or how that is written).
For ecclesiastic and sacred / classical projects I decided to get Fluffy Audio´s Dominus . I haven´t got a track written that I can show but damn - very nice and for this kind of project just incredible. Here is a demo by Morten Lauridsen.
The last choir that I purchased was Performance Samples´s Oceania . While this choir IMO has got quite some flaws it works very well for what it is made for: Expressive and very fast and energetic singing right out of the box. So even I was not ULTRA impressed I respect that choir a lot because it is very strong in fast passages and its high amount of vibrato can really kick ass in special situations.
So my final conclusion on choirs is:
I am not using Mercury, Liberis and Lacrimosa at all and Cantus extremely seldom. I very rarely use EWQL Symphonic Choirs (besides I really have to write lyrics. I know the engine and vst very well and know how to program with it. I stil try to avoid it because IMO the sound is not up to date anymore and it takes too much time working with it until everything sounds ok), Storm Choir II (even it´s good, but for quick writing i prefer SC I and for the more complex stuff i prefer the next generation choirs Freyja, Arva and Wotan). I am using Mystica often when it comes to medieval / celtic and I am also not using Oceania a lot - just if i need these fast passages or something that cuts through the mix when having a large orchestra performing.
Means: Out of all these choirs I am mostly using Arva, Freyja, Wotan and Dominus. These are THE most convincing options these days IMHO.