Been working with the built in Studio Strings and oboe for an arrangement of Gabriel's Oboe (from the motion picture The Mission).

I've got it the best I can, so now I need brutal critique from anyone who knows more about mixing and orchestral arrangements than me (so, almost anyone).

I'm looking to buy some sort of package of sampled orchestral osunds, but I really don't have a clue what I'm doing. I understand real instruments much better than software controlled ones. I really just want something that I can use to add some string arrangements to my pop/rock music. Really, I'm far more interested in the strings than I am in any of the other instrument families.