Due to a couple of partnerships, I use Cubase & Nuendo a lot. I've grown partial to some aspects of it, many things I still prefer about Pro Tools. CB is far less picky from a hardware standpoint, and much leaner. Pro Tools audio engine may have a tiny bit more mojo. Subjective claim though. In fact comparing these two at all is likely 99% user subjective... because they are both excellent applications. Digi Tech support and this user group win by miles in the customer relations category though. Steinberg's attitude leaves a lot to be desired.