I am researching the film composing library Gravity by Heavyocity, strongly considering acquiring but at $500 retail I will hold out for a sale price.

Acquired Hans Zimmer Strings composing library of instruments. Beautiful strings, has all string instruments and their articulations that one could imagine, including harmonics for bass, cello, and upper range instruments of course like violas and violins. Especially nice for software sounds but also has epic string instruments.