Kubrickfan is right about the remixing and potential and usual actual difference.

I haven't bought into SACDs, though with current equipment it would be no problem. SACDs can be quite variable and it's hit-or-miss.

Furthermore, they are mixed according to the producer-mixer-audio guys tastes. Of course this is also true of stereo CD and vinyls.

A "work-around" for this is to change the levels of the channels according to YOUR taste. This would work and might often be required. So in addition to level changes via remote I would like to be able to change levels individually from the front panel. Not gonna happen.

I listen to about 95% classical music and most of the rest is jazz so I have a reasonable amount of SACD material that fits in nicely. My classical collection consists of about 1000 CDs 150 SACDs
some LPs and a very few DVD-As. I find that I spend most of my listening time with the SACDs even though the selection is more limited.
Most of them are multi-channel and I find that that generally improves the listening experience without any re-mixing.Of the last 50 discs that I purchased, probably 45 were SACDs.
A number of my SACDs are also 2 channel and I find that they provide a more pleasant presentation than redbook CDs IMHO, more like LPs but without the surface noise.
I have no imperical evidence that SACDs sound better, but they increase my listening enjoyment.