I'll throw in a nod for the PC modules. I have the Waves SSL, and it is wonderful. That being said, using the console emulation and the PC 4K when set for the same settings as the SSL most people would be hard pressed to tell the difference. There are certainly people on this forum who could, but in a blind test I would be interested to see who could really differentiate them. Even then, it is simply a "difference" and not necesarily a better or worse situation.
It is cool to have the Waves, but if you don't have several hundred dollars, consider saving it. You already own an SSL emulation. The Waves won't make your mixes magically better.