I provide this as a public service, by all means make your own judgment.
My brother and I made a challenge (to each other), a "synth challenge" if you will, whereby we make a song using only synths and at least one guitar track. Originally I think it was kind of a "Cubase synths are better than your crappy Sonar synths" thing, but it took on a life of its own.
Anyway, when I finally was done with mine I was still looking for....something. So I decided to try the trial version of the RND plugs and see what they would do.
First, the stock Cubase 6.5.3 plugs (Studio EQ and VST dynamics):
And then the RND plugs version, with the settings as close as I could get them to the first version (the eq curves aren't exactly the same in the RND plugs, and I had to disambiguate the VST Dynamics and use the RND Compressor but use the Cubase gate/limiter - as a result this one is a little louder but not much and that's not really a function of the RND plugs):
My verdict? I think the RND one sounds better, maybe "warmer" is the word...but $799 better? Not sure about that.
Still, it was a fun excercise and I think it is interesting to see exactly what effect it has on the sound.