Not necessarily. If you can find on Bandcamp, it’s probably best to buy from there since I heard more money goes to the artists. I buy from wherever I can find the music, and thus I’ll cycle between Bandcamp or HDTracks if I can’t find it on Qobuz.

Separately I dislike how Bandcamp embeds their name in the metadata of the tracks you buy, but it’s trivial to remove it. Just rubs me the wrong way, so most of the times if songs are on Qobuz I buy it there since they don’t do that.