Classic Records redid the Zeppelin catalog in the early-2000's, and those pressings are now worth a fortune (Classic even made them available as single-sided 45RPM LP's!). Why? Because they sound better than the originals, all of them. Hardcore collectors who own both Robert Ludwig-mastered Atlantic/Swan Song LP's and the Classic Records reissues have compared multiple copies. Classic offered the complete set in a miniature flight case, and those sell for more than most of us have spent on our hi-fi's.
Classic was granted access to the original analogue masters, from which Bernie Grundman made new lacquers. Grundman, in one of the videos about the new Analogue Productions reissue of Kind Of Blue (which he again mastered, having done the same for Classic in the late-90's), states that the idea that analogue tapes deteriorate by the simple passage of time is a myth.
QRP---Analogue Production's in-house record pressing facility---is making some of the best LP's in the entire history of recorded sound. The way the LP's are pressed, every LP is in-effect a white hot stamper record. Analogue Production's Chad Kassem is deadly serious about making the best LP's humanly possible, and the ones I own are worth every penny. Is $35 a disc too much to ask for an LP? That's a lot cheaper than the same record from Better Records. I dare anyone to compare an Analogue Productions reissue to a white hot stamper version of the same title. Go ahead---prove me wrong.