I ran NIS10 for about 4-6 months. During that time, I was extremely dissappointed with NIS10 both due to faulty Symantec releases and also what appeared to be incomplete and poorly thought out new features. I then went back to NIS09 for, at least, a half year.
Well, I just upgraded one of my systems to NIS11 and have been going extensively through the various settings and also testing. I have to say that I think NIS11 is a big improvement over NIS10. It seems to correct most of the issues I had with NIS10. Perhaps, in a month, I can look at finally retiring NIS09 across all systems.
I think if you, Symantec, can avoid the problematic NIS updates that happened this year (like missing UI, unable to launch full-screen apps, etc...), then you'll have a winner with NIS11.
Although I still wish that automatic forced patching of NIS was optional, and that it was easier to rollback a problematic patch. I don't relish being the first kid on my block with a newly deployed patch. I would much rather defer that honor to others.
In any case, thanks.