If you use Roon it at least equalizes the UI part, so you can make a decision more based on SQ. I personally like Qobuz just a tiny bit more but it's not as obvious to me as what some people say.
Also keep in mind all streaming services have an issue with not being very obvious about which master is involved. Not a big deal for some music but things like classic rock has quite a few versions out there. When comparing two streaming services, we may actually be hearing different masters which will impact the conclusion.