Wow nobody is using Nuendo 4 yet?
What does that tell me?

Hasnn't Steinberg developed version 4 to be geared more towards video post and left the multi-tracking of music for Cubase 4?

Cubase 4 boasts that it's built on the Nuendo engine, so I'm a bit curious if that's what they're doing.

all I know is they have added side chaining in both cubase and nuendo. its about freakin time!

N4 has a lot of advantages to it, and it has some problematic bugs as well. I've pretty well nailed down the bugs to avoid and it's running great (mainly some plugins that aren't completely compliant cause crashes, and nasty project corruption crashes - the list is small though - NI's Guitar Rig 3 being the main one for me - other NI synths run great).

The features that swayed me to make the leap are draggable inserts (huge time saver in mixing); significantly better routing/busing options (recording stems, groups, buses, external inputs, etc back to tracks is a great feature); selectable output enabling for VSTis (no more defaulting to 8 or 16 outs enabled with large Kontakt output configs).

In short, yes it's worth the upgrade (including the NEK). Just tread carefully for production work at first. Don't import all prefs from N3 - just import key commands and window layouts later. Start with fresh templates from the "Empty template" and you might save a lot of headaches as well - there was a significant change in the preference file formats and that seems to have caused instable projects when working from old templates based on older preference file formats.

Cool thanks so much dterry!