The most commonly used module will probably be the limiter. How does the current version stack up against Ozone 4? In my testing Ozone 5's limiter is very smooth, retaining transients and detail while still achieve high volumes when necessary. There is a new Intelligent mode III and this is what I have been using in most of my mastering projects on a daily basis. I've compared to some other popular limiters and overall prefer Ozone 5 now.