I always loved Cinematic Strings 2, for several reasons. But the main reason is the amazing “run mode”, and that when programming ostinatos with overlapped notes, you get that realistic slur between the fast notes, which adds so much expression to what otherwise might be a stiff, robotic ostinato.
What other String Libraries have this “slurred” capability on ostinato patterns? 
The only ones I can think of that might have it intentionally are the 2 8dio Century Ostinato I & II libraries, and Orchestral Tools’ String Runs package -which I don’t have [wish I did], but I remember they mentioned something about it the demo video.
Also, I’m not sure but I heard something recently about Nashville Scoring Strings having some slur action.
I’m drooling over…I mean considering it right now, and noticed there’s a 30% off code on their site,
which makes the $299 price come to $209.30
String Runs is NEVER on sale - I’ve watched it for years now, realizing I’ll have to pay full price if I ever want to use it.