I own the RealityCheck, and IMHO it's every bit as good as the press says it is. I've NEVER heard a tweak that makes this kind of positive difference to a CD--and, believe you me, I've tried more CD tweaks than any sane person would ever try. Of course, if the CD is poorly mastered to begin with, you'll probably hear more of that on the burned disc, though I haven't come across that situation yet. George's ClearDisc and ClearBit solutions, which you apply prior to burning, make a big difference, too.
