Another option to consider now: Qobuz, a streaming service based in France, has finally pulled the trigger on its long-rumored entry into the US market (it has been present in Europe for about a dozen years). They will offer US customers various tiers, including compressed music to compete with the likes of Apple Music and Spotify, CD-quality 16/44.1 FLAC streams at the same pricing as Tidal's HiFi tier, and more expensive "Hi-Rez" tiers offering higher-resolution streams, which they define as anything 24/44.1 or higher. One interesting feature they have over Tidal--they've integrated a storefront for purchasing and downloading hi-rez digital files.
They offer a free trial period, so may be worth checking out. My take: this will appeal primarily to audiophiles interested in the highest-quality streams, and their success in competing with Tidal for this segment will depend on the catalog they offer in the US (they are said to be stronger than Tidal in Jazz and Classical, weaker in certain other genres) as well as how well they are integrated into audiophile-centric hardware and software (e.g., network music players, Roon, etc.). Nevertheless, it is good to finally see some competition for Tidal in this space.