hi,
the Dynamic Range Meter has no value these days, for technical reasons. check out Loudness Units and EBU R128, for example. there are free meters; the ToneBoosters vst is pretty good. read the paperwork and it will let you know what the various readings correspond to.
typical targets, as a guide:
---------------------------------
-14LUFS "Integrated Loudness", give or take a couple of LU's.
aim for a loudness range (LRA) of about +7 (pop songs are generally less than this, classical more).
True Peak shouldn't really be above -1.
radio stations for example, increasingly have to meet legal loudness obligations. iTunes also penalises over-compressed material if the user has the leveller engaged (don't quote me, but the last time i looked iTunes uses -16LUFS, but i stand to be corrected because it was a while ago i researched it). google the subject and it will provide a lot of information....so please don't stop at my overly brief post!
spread the word