Looking to compare SACD sound with redbook

If you have an extensive CD collection, you can't replace it with SACD, because the SACD versions of 95% of it don't exist, and never will. I second Big's comment that the major difference is in the remastering, not the higher resolution. And remember that in the vast majority of hybrids, the SACD and Redbook layers use different masters, so when you compare them you're comparing the mastering, not the bits.

Thanks to Stehno, Bignerd100, pabelson and Tvad for your comments -t is helping me get a better feel for what is going on.
Stehno, do you have a player in mind that does this (emphasizes high quality rebook play, yet play SACD for less than 2K)
Sound like the ocnsensus so far is that if you stuck to very carefully done redbooks, they would near SACD quality, but human nature being what it is we can expect good improvements such as Pink Floyd's on reissues because of the extra care given to SACD.
Gammajo

I have a question that is directly related to this topic. I got into SACD because some of my favorite artists were being remastered (Police, Peter Gabriel, Dylan, Miles Davis, etc.) into the format. To my ears, the SACD of Ghost in the Machine is far better than one of the earlier redbook versions of that same album. Now, sticking with the Police for the moment, there discs have been remasterd several times since there original transfer into digital back in the 80's. So, in cases where discs are hybrids and contain both SACD layers and redbook layers, is the redbook layer the most recent remastering pre SACD?

I owned an Exemplar Denon 2900 for 5 months before I just sold it. Before that I owned the Sony XA777. The Exemplar completely bested the XA777 on redbook, but I found the two equivalent on SACD. The redbook performance of the Exemplar 2900 had me buying the recently remastered version of several Miles Davis CD's instead of looking for the SACD's. That player made me think twice about my investment in SACD.

I have about 140 SACD's now, and only about 25 of them are non-hybrid. Most of it is music I did not repurchase but was new music to me. My experience with the Exemplar Denon 2900 has me questioning what kind of player will be next for me, an awesome redbook player, or, a Universal of some kind.

Good thread, thanks,