Hi Richard,
I know it's a bit controversial decision because it has a cost (actually 18€ for 60 minutes credit), but if you are planning to buy something expensive as a full library, I think it's a fair deal to try the "Audition Credit" service.
Yes you have to pay for it, but you may select and play all the articulations of all the products you would think about and/or plan to buy. In case you do, I recommend you record the output of your trial with any audio streaming recording utility for future comparison and more accurate listening.
I can't directly help you, because I don't own Appassionata string.
( I was reaching similar results mixing Orchestral and Chamber strings: of course it is not the same than just playing Appassionata, but the expressive vibrato of Chamber strings mixing to Vibrato of Orchestral with Cell-X-fade controller, was a good turn-around for some "appassionated" effects 😛. BTW number of players you reach mixing Chamber and Orchestral is the same of Appassionata).
Bests, Fabio