All valid points. Some of the disc that I have in my collection just outright suck because I also have the vinyl to compare them to. So upgrading in those cases is a no-brainer for me. The others that I own are decent. Not something I'd throw out, but I am interested in knowing if there is a huge improvement in a Remaster version, mainly for separation of tracks that bring forth instruments that were buried in the original mix. I do have a kick ass surround set up that will definitely benefit if the Remaster was done right. Some of the older first press CDs that I got are a bit bright and I'm looking to see if they have tweeked the bass, which would add to the enjoyment of my listening experience. This would also play into using Headphones when I work late into the night and don't want to disturb the neighbors.

A good example of Before and After is my most recent upgrade for Ace Frehley's '78 Solo Remaster which really is night and day compared to the First Pressing. Same goes for Creatures of the Night. I've done a lot of reading on other sites to get a feel for what most people think regarding specific albums and artist. One thing I notice is that most people have said they don't like any of the AC/DC Remasters which I found surprising. I was only looking to upgrade Highway to Hell and Back in Black. Everyone said to stick with the Original First Press. Below is my list of CD's that I'm interested in upgrading. Whether I do remains to be seen based on reviews or access to Used copies at my Secondhand Record Store that allows me to check them out before buying.

The Beatles - White Album, Abbey Road, Rubber Soul
AC/DC - Highway to Hell, Back in Black
Led Zeppelin - I-IV, Physical Graffiti
Fleetwood Mac - Rumours
Michael Jackson - Thriller, Bad, Dangerous
KISS - Self-Titled, Hotter Than Hell, Dressed to Kill, Alive, Alive II, Destroyer, Rock and Roll Over, Love Gun, The Elder

I want to say P!nk is on the list. But her stuff is still "recent" enough to suggest that there aren't any Remasters. If she does have newly Remastered stuff, I'd definitely be interested to hear what they sound like compared to the current disc.