I have the 212 sealed. Music is darn good stereo or in prologic surround mode. BluRay concert sounds even more fantastic.
The caveat? You MUST pair them with a capable subwoofer. I don't have the power cable for my Orbit Shifter so currently I am using my two HSU ULS 15s. They can keep up with the speakers at moderate levels.
My two favorite scenes to demo to buddies and impresses the hell out of them is:
1. The shootout in Book of Eli. I have never heard anything sound as real as bullets before. Each bullet fired feels like a tiny thump in your heart. However, I feel like the sound is a bit on the high side. This is likely due to the lack of mid-bass from my subwoofers. I have a feeling (confirmed by ROB) that once the OS has been set up, it'll should not be an issue.
2. Andrea Bocelli concert. Track 8, where a woman was singing. It was just so sweet... it's all vocal. This would demonstrate how musical the 212 actually is.