You can have a favorite band, mine is Zeppelin, and still say the Beatles are the better band. I don't understand why you can't fully enjoy a band/artist and still concede that there are other bands/artists that are better?
But what are you basing that determination on?
Michael Jordan's greatness exists regardless of whether or not he is my favorite. In other words, my liking or disliking of Michael Jordan is not an appropriate metric by which to judge his basketball prowess. Metrics such as points, assists, MVPs, and the like are much more probative than BR21's rooting interest.
Music on the other hand has no other purpose in this world but for me to enjoy it. Does it also exist for you to enjoy it? Well, sure. But I don't give a shite if you like a song or not. Your opinion of the song has no bearing on whether I like the song when I listen to it. Record sales have no bearing on whether I like a song when I listen to it. General reputation has no bearing on whether I like a song when I listen to it.
The ONLY thing that matters is whether I like it. There is no other consideration. And so there can be no other metric. Music is 100% subjective. Doing the math, that makes it 0% objective.
Passion Pit is a way way way better band than the Beatles. Not even a close call. Why? Well because I've listened to both bands and I like Passion Pit's songs a lot better than the Beatles' songs. End of analysis.
There is no best.
There is only favorite.
But to the extent there is best, it is only a survey of favorite, and is therefore of little concern to me.
Guy: The song Sleepyhead sucks.
Me: You're wrong dude.It's the best song put out in the last five years.
Guy: What makes you say that with such certainty? You think you're some kind of music expert or something?
Me: No, it just sounds the best. What else do you want to know?
Guy: Well I want to know if these rumors about you having sex with my mother are true
Me: Oh yeah. Twice last week. Probably again tomorrow night. In your bed.
Guy: Okay. Cool. Talk to you later.