I was wondering, when using the entire orchestra, what volume levels does everyone set the individual instruments of the orchestra? I was wondering because I don't think it's very realistic to put all instruments at 101, but finding that realistic balance is, for me, difficult.
percussion is rather different, timpani hits mostly 115 with velocity 105.
At rendering time with a decent DAW (sequencer) like SONAR, DP or else, these values may vary according to the situation in the piece, sometimes the brass must really stand out with a higher base-value, also achievable using CC#1 (modwheel:volume and modulation in GPO). Other sample libs may demand other CC for the same effects.
To test it for yourself, setup a full orchestral score, add those Vsti to the tracks and put one note on every line making a full chord from top to bottom at the strongest registers of the instruments. Satisfied? OK, otherwise alter these values.