@dokosan i’ve had the SIM Audio 390 in my system in the past and I think it is a really good product, very well built and accomplishes a lot of things. I thought the Mind software was very good and SimAudio does a good job of maintenance. I think the advice you got from SimAudio is probably about right from my experience.
I have both Qobuz and Tidal. I have less experience with Apple Music and Amazon, but I understand that both have improved significantly in the last few years and there are people who prefer one or the other over what I use. While I generally prefer Qobuz, I know plenty of people who like Tidal better and it can vary from track to track. There is no objective “truth” here, it’s a subjective preference and we all hear differently. Easy enough to try both and choose what you like, and I suspect your preference concerning the user interface will matter a lot more than sound quality.
Again, that’s just my opinion, but I would say to someone who says that one is “objectively“ and definitively better than the other, let me see your objective proof. I still prefer the sound of a well recorded vinyl album on a high-quality turntable to streaming, but that’s just me, doesn’t make it right for you. And really, the ability to access millions of tunes at CD quality or better(And that’s another big debate concerning high rez) for 15 or 20 bucks, a month is incredible value that greatly enhances the whole experience.
I’d pick the service you find the easiest to use and be happy.