That's a tough call. Unfortunately, single layered SACDs whether stereo or multichannel can ONLY be played on dedicated SACD players which is why they switched to hybrid which also contains a RBCD layer.
Universal Japan with their single layered SHM~SACD process seemed to think that by eliminating the RBCD layer and only restricting their releases to STEREO and by applying green ink to the label side there was indeed sonic benefits to be derived but the jury is still out on what benefits, if any, their proprietary SHM process delivers. A lot of pundits argue it's just BETTER MASTERING from BETTER master tapes.
Since SACDs are pressed on ordinary DVDs and enjoy the multi layering of the latter, I don't think the hybrid SACD, if done accurately, is any less sonically pleasing than the single layered variety. Just MY opinion and I have thousands of SACDs!