I recommended LASS. http://www.lascoringstrings.com/
I'ts very real libraries for performance symphonic orchestral. I have VSL. But when LASS released i buy it.
Not sure about the first three but agree with Switch theory about Humtoo, nice idea but do you really want to join a scrum for badly paid jobs?? Not really worth it unless you are desperate to get something on your showreel........