Here are the samples from one of the examples in this thread. (http://www.hydrogenaudio.org/forums/index.php?showtopic=98199)
Samples for the Woods of Ypres example.
Samples for Borknagar's "The Earthling"
Needledrop vs. iTunes Matched AAC file trimmed losslessly via Quicktime X's trimtool.
30 second samples for Saint Vitus' "Let Them Fall" ©2012 as illustrated in the previously-linked thread.
30 second samples for:
Krisiun - "Shadows of Betrayal" from "The Great Execution" (2011)
Ensiferum - "Heathen Throne" from "Afar" (2009)
D.R.I. - "I Don't Need Society" from "Dealing With It! (1985, original - 2003 Beer City pressings.)
(The D.R.I. example is about the only that I've come across in which the CD is "as good or better" than the record with respect to the subject at hand.)