I cant say enough good things about Airwindows' plug ins. Specifically Iron Oxide, Buss Colors, To-Tape, From Tape, Desk.... Many of their plug ins are very subtle, and dont go into that grimy dirty feel that some musicians may use in more straight forward 'rock' music; thusly i feel that their sublte/semi-transparent nature fits very well with VSL and orchestral mock-ups :)
http://www.airwindows.com/
-michael