I've subscribed to Qobuz Studio for a long time, and I've always been happy with it. It's well curated, easy to navigate and the integrations with most platforms work smoothly, including BluOS, WiiM and Eversolo. I do also subscribe to Spotify, but that's so I can share recommendations with friends and family more easily.
For classical and jazz I use Presto Music, partly because I work there, but also because it is focused on those two genres and offers the higher level of metadata that classical music in particular requires.