I don't know about the Dimetri, but I'm currently using a RSA Danielle, and previously owned a Audio Magic Stealth and Eclipse models. These are very different sounding power conditioners. The Audio Magic are very fast, nuetral and revealing, though they can sound a tad thin. The RSA conditioners (I've also owned a Jaco and Duke) tend to be fuller, warmer and more powerful sounding, but could sound slow in the wrong system. The RSA products are not quite as rich, and sweet as the Shunyata conditioners, but they are definitely on the other side of nuetral than your Audio Magic conditioner.
Cheers,
John
Cheers,
John