I've never tried Spotify so can't say that Tidal is "better", but I chose Tidal because of the availability of Master quality albums. I do almost all my Tidal listening on decent systems and can hear noticeable differences in sound quality when comparing most of the Master quality albums vs their "HI-FI" versions even when not using a MQA capable device. I wish Tidal catered more to my musical tastes (classic rock, jazz, electronic) and was easier to browse by those categories, but I can usually find anything I want through the search function.