At the risk of sounding like a broken record... dynamics really make music interesting. When all the instruments are at the same level, they begin to compete for space. The low end starts to take on mud, and mids get washed out. The problem with soft synths are the wave table samples are really compressed to start with. The lack of overhead within the midi tracks makes it difficult to mix without popping over the limit. This is where it becomes important to learn how to adjust the levels and effects in the synths to allow them to gel within a mix.
A scientist knows more & more about less & less till he knows everything about nothing, while a philosopher knows less & less about more & more till he knows nothing about everything.
Composers Forum