Buy both. You will enjoy the contrast and comparison. You can remain judicious in selecting your choices. At current SACD and vinyl reissue prices I sure do.
As for sound I am betting you will become a believer in the merits of vinyl. I have SACD that beats my vinyl and vice versa. One of the fun things about this hobby is screwing around like that. I also enjoy the non audiophile crowd that come over and I am betting you will love the slack jawed reaction of "I cannot believe that is a record playing" (that pride of ownership thing).
You having no vinyl collection is kind of a plus. You will have "virgin" vinyl and can go with your taste. Buy some LAST treatment, take care of it, and it will sound great 25-30 years later. I can make that statement from experience. Fiddle with records, cartridges, alingments, tonearm cables, record cleaning machines, it is fun and rewarding. As time progresses you can get deeper or bail out.
Never sold my turntable or vinyl when digital hit and I stayed in the trenches. I upgraded my vinyl a few years back by trading a Sony SACD for a SOTA sapphire. One of my personal best moves in audio.
Have Fun.