I have 5 most used and favorite headphones and I'll simply pick depending on my mood and content I'll be using.
I get that comparing the X3 to other headphones but I don't see any reason like going like "oh no, bass is strong on this while bass is nice on other one". That's a bit silly
But that's just my opinion. When I buy a new headphone, my intention is to enjoy it ^^
I guess that's the curse of this hobby. This hobby is a curse and a gift. Owning many will give you choices and owning many will torture your wallet lol