I have a Sony SCD-777ES, and a Michell Gyrodec/SME 309/Micro Benz Glider/ARC PH3SE. I personally prefer the sound of my vinyl rig on most LPs to the sound of the SACD player on most SACDs. BUT...
I have a few hundred LPs from "the old days", and getting additional LPs is a chore. New vinyl is available, but expensive. Used LPs are around in larger cities, but in varying condition. Despite owning nice vinyl gear, I find I purchase very few LPs each year.
After purchasing the SACD player, I decided that I would only purchase SACDs, and no red book CDs. Right!! While the SACD offerings are growing, I keep finding the music I want to purchase on CDs, and not SACDs or LPs. It's not clear to me that SACD will "make it". Look at Betamax. It was a better video system than VHS, but it died. Ten years from now, my SACDs may be like 8 tracks, reel to reel, and cassettes.
I have many times more red book CDs than my SACDs and LPs combined. I find I listen to CDs 90% of the time because that's what I own.
If I were you, I would spend my money on improving my red book CD sound, whether that means a new CD player, a DAC, or even some other link in your system. You can go to any decent high end audio shop and hear stunning sound from red book CDs. I think it is too soon to spend money on SACD, and too late to get started with vinyl, all because of the software available at this time.
Gary