For me it’s qobuz first with the sublime subscription.
Or for DSD files I use this shop
https://www.highresaudio.com
But I try to focus on qobuz. It’s a bit like movies where I buy them all in iTunes and try not to be all over the place with all the different stores.
Also good point. I have upgraded my Qobuz to sublime recently so for this I prefer Qobuz’ store but smaller or independent artists I tend to support through Bandcamp. Would be interesting if Qobuz is willing to share their revenue split with artists similarly to Bandcamp’s open stance on their policy.