well thats all i run with resolume. 1 try left so not good but it works good!
i use mine like this!
from right to left i have the first 15 keys to trigger the first 15 channels and then use from left to right again the first 5 black keys for the other channels.
then for the rotary knobs i use 3 of them for the layer opacities and 2 for effects parameters and 3 for the layer speeds! so all in all you got 8 used.
oh just so i don't forget i assign the last 5 black keys to effects. im in the process of an m-audio trigger finger! i really like the oxygen 8 to use for vj-ing. its small and has everything you need for when you first start vj-ing