I wish had the cash for Spotlight Strings, but alas, I do not. So I picked up Solo Strings 1 instead!
This is my first KH library and so far I'm very pleased with it. For $40 it's
really good. And TVEC3 makes it very easy to move between articulations and sample variations. Very cool. The only other orchestral samples I have are GPO and Miroslav CE, and as solo (or "spotlight") strings these are just so much... better. I look forward to using them.