THe CA-2A is very good. For an 1176 try the softube Mix bundle that Cake had special priced a while back. A half step up from the SONAR one, plus you get some other goodies.
But the SONAR 1176 ain't bad, just not so "vintage", but if you get X3 producer you have Nomad Audio blue tubes, which is vintage and you get more modules than you can shake a rattle at.