Voxengo - Sound with a Soul
Professional VST PlugIns and
AU PlugIns

MSED just works as it must, and the new "inline" mode is very convenient.  Powerful plug-in for mastering, and you can always use it on a track to get some special sound.  You saw it in powerful mastering processors, now you can have it on your PC, and even for free!
You can read about the Mid-Side decoding in Bob Katz's "Guide to TC Finalizer" or "Secret mastering" (he also shows some tricks), one can find them free in PDF in the internet.

Voxengo simply rocks.  I worked on a very low budget project that still required high quality audio, and the result was simply impressive.  Tube Amp and MSED leave you with better-than-average sounding mixes (and I've heard alot of "professional" works), yet they have the best price you will ever find around: Free.  If I ever do a lucrative audio work, I think I will invest in all Voxengo's VSTs

Kudos for the GREAT work Vox!

After purchasing your mixing and mastering tools, and others.  My product has improved significantly.  I was having trouble getting airplay before because of sonic reasons.  As stated in previous correspondence if has been a financial hardship but the rewards are starting to pay off, perhaps because I own them I have a little more pride in my work.  After a couple more purchases I will be using Voxengo exclusively.