Spitfire have loads of excellent packs. Start with their free ones. I sadly now have Albion 1, solstice, ensemble Strings and loads of others. I have moved away from garritan now for orchestral sounds. Abbey road strings are good too. Albion has I think, the best collection, but is expensive. The strings though have really wide variations of playing styles. Oddly I’m using spitfire British drama toolkit strings an awful lot for gentler subtle stuff. Watch the demos and walkthroughs.