Best 5.1 surround recordings?

I gave up on developing a 'hi-fi" 5.1 system quite awhile ago, and settled on my 2 channel system, which I'm very happy with. I do have a couple of 5.1 surround sound SACD's that I recently stuck in my home theatre system through the Oppo just for kicks. It was kind of fun to listen to, even through the smaller surround speakers and subwoofer. So, what does anyone recommend. I'm thinking along the lines of rock music as, in my mind, it lends itself to tweaking more than classical. I suppose, as I've got the Oppo universal player, that DVD audio surround recommendations would be okay too, though I've only gone with the 5.1 SACD recordings so far.
I remember reading, someplace in the past, that many recordings are poorly remastered in the surround format, so to help me avoid wasted purchases I'm throwing the question out on the list.

Thanks,

Rolloff