northlake63
What about the strummed acoustic that comes with Sonar. Is it different from the NI version ?

It is completely different thing. It is not sample based but physical modeling, and to be honest sounds terrible plastic. Nothing similar to real guitar... Maybe when there is available version 5 or 6 it will be better... Very hard to simulate physically such instrument like guitar...

When I can find the right strum patterns, it sounds better than my Fender acoustic guitar with Duncan soundhole pickup going direct.