I'm a bit at the end of my options at the moment. I have to admit I'm not the best in mixing, but I know my way around the plug-ins quite well, but here goes:
Although I love the playability of the library, what bothers me is the overall sound of the libraries, especially IW. I've tried EQ, different settings in Kontakt for the instruments (mics, halls, studio with my own reverb), played with early and late reflections under the hood, but I can't get it to sound right.
For IB I have to say that trumpets, horns and tuba are okay, but I simply can't get the Trombone to sound right in louder phrases, even when I don't exceed CC1 at a max of 100.
The woodwinds are much more difficult as I think almost all instruments (except English horn, the bassoon family and the bass clarinet), do have a thin sound, or don't have the piercing high register you would expect for flute, piccolo, and clarinets. The oboe lacks body and the clarinets and soprano and alto saxophone sound synthetic.
Personally I really love the sound of the VSL Woodwinds, it would be a dream come true if I could get IW to sound the same, or at least something comparable.
Please don't read my post as a complaint to Aaron and the great job he does, but as a request for tips to get a great sound.