I've given the VSL brass players a huge workout in the world premier performance of Derek Bourgeois 2nd Brass Quintet which you can hear here This is a big work for brass. In fact it was originally written for the Philip Jones Brass Quintet in the 70's who considered it too difficult even for them. It was subsequently rescored as a concerto for Brass Quintet and Brass Band (and subsequently orchestra) in which incarnations it has had several performances but this is as I say the WP of the original version.
The VSL brass cope very well although the lack of straight mutes and horn mute was a bit frustrating. I've used about 24+ patches for each player and mixed and matched the Bb and C trumpets using what patches sounded best. there is an ultra low pedal section towards the end which uses the wagner tuba, the contrabass trombone and the contrabass tuba.
The mix as ever will be my downfall.
Any comments are better than no comments which is of course a comment in itself!
You can read a bit more about it on my WS if you so wish.