Kontakt 5 is absolutely an amazing piece of software, and is my go-to synth sound source.
Even with the current struggles to be able to properly deal with more than 5-6 loaded instruments in a given instance of it, working with Kontakt in Sonar is ridiculously easy, and incredibly well-suited for the kind of music I like to create.
Kontakt and Sonar track/project templates are a beautiful marriage. Folks are always amazed at how quickly I can get a new project loaded up and playing top-notch synth sounds.
I am SOOOO looking forward to being able to load up 15-16 instruments into a single instance of K5, and be able to route audio tracks properly.
Bob Bone