Hi-res digital audio vs sacd

I've got a pretty good setup for vinyl and digital audio files, but I have an opportunity to get a "minty" 10-yr old audiophile-grade CD/SACD player for $350. I am intrigued by it but don't know if it would really give me any better quality for some recordings than what I already have. Also, I know that SACD didn't really catch on, but I see tons of audiophile-quality releases out there from MFSL, etc.

The player I'm looking at seems to be both an amazing, rock solid transport with a Cirrus Logic 32 bit DSD chip.

My digital setup is currently a Bluesound Vault II, pushing out FLAC files of various quality up to 24-bit 192KHz to a Cary DAC-100t tube DAC (which does not have DSD support, so I am guessing that I wouldn't be able to leverage it for the SACD player), using a Creative Cable Green Hornet coax in between the two.

Can anyone chime in with their opinion, both on what I should consider in terms of quality comparing the two as well as music collection availability on SACD vs hi-res files that are sold online through HDtracks and other vendors (like I know some mastering houses have their own releases on SACD but not sure if the same music/mastering is available on digital files).