First, let's get it out of the way:
Q: Is CSR "metallic"?
A: Do you mean, as in: "Does CSR reverb work well when used on covers of songs like "Enter Sandman" and "Master of Puppets"?
Q: No!
A: Initially, yes, I found the default "no settings" configurations to be metallic sounding on all the modules. And I would stress that if you like reverb tails with lots of high end, you definitely need to demo this and make sure you can use it. For me, there was an easy solution, because I use subtle reverb for almost everything so I can dial down the mix ratio and suck the highs out of the tail and it sounds fine. Just keep all this in mind.
Basically, I think for 200 clams (cross-grade) and what amounts to low CPU use for a single instance, this is a very usable reverb. It is indeed capable of being "musical" (without too much effort) and can enhance the sweetness of a mix.
Tragically, I can predict it will not replace Lexicons in the studios of the pro producers of the world. It's not quite that good.
But, that said, it is on par with the best of the VST reverbs, IMO (again, with the caveat that the highs have to be managed carefully, but I find that true of AAR as well).
The advanced pages are nice. They give you more control of attack, frequency contour and stereo image, among other things, and it's not a steep learning curve.
So far my faves are some of the plates. They can be pretty convincing and have a certain richness.
All in all this is definitely a happy purchase.
