Actually I use Nuendo because I started out with Cubase, so I know the ethos of the program. It also still has features that are useful for film that Logic doesn't have. I was originally going to use a combination of ProTools and Cubase, but once Dietz had pointed out that with Nuendo I didn't need PT, had many more features and could save £7000 I was sold.
DG
Nuendo's post-prod features are what caught my eye. For what I've observed, it was worth noting how much further (even if only a little bit) the notation features went. I'm still not in favor of DAW notation except for editing and personal reference (perhaps for an engineer whose needs are considerably different from live musicians), but it did turn my head.
I used Cubase for many years, but Steinberg screwed me with an update that required a different authorization code. It never worked, and they blamed me for it-- they totally blew me off with correcting the problem, so I bought DP. Maybe one day Nuendo will be less of an "innuendo" and find its way into my studio if my faith in Steinberg could ever be restored.