I asked this question a few months ago (about DSD and DAVE) since I have lots of SACDs and an EMM xds1 cdp. Yep, the EMM is amazingly real on DSD/SACD, but the DAVE is wonderful and handy and fits nicely on a desk. So for now, I kind of need both, even though it's inconvenient.
But I still maintain that DSD done right lifts another layer from the sound that is significantly closer to real life. There is nothing like it as I hear things.
[And of course, only a fraction of the (mostly popular) music I listen to is in SACD, so PCM still take precedence. If you like classical or jazz, you are in luck because of the wealth of DSD in these genres.]
I'd love to dispense with my discs and just go fully PCM, but I just can't give up the truth in sound that I only hear in SACD. Even hi-res PCM doesn't come close.
(Someday I may rip my SACDs, but it's a painful process and I'm too lazy for the moment.)
EMM, Playback Designs, and Esoteric sound the most brilliant on SACD to me. I have not heard the Holo or the other ones, so I can't comment. DAVE is very good, but it does not match EMM in DSD for me.