What is the best sample library/ utility for orchestral mockups and scoring type applications? I'm looking for fidelity as well as functionality.

:-?
Hi

Wondering what to go for regarding orchestral samples.

I have a Korg Triton with 16 bit sounds that is OK. Just wondering if the following options are worth investing in? They are varying costs; what xtra do you feel you get for the money? Any users out there with experience.