Well, the difference between 8 or 9 and 10 is 20% or 10%, but anyway.
My opinion (you asked for it), is this. If YOU are happy and enjoying the music, have spent little, and have no angst because you haven't spent more and are, therefore, missing something - you're doing fine. Or, if YOU are happy and enjoying the music, have spent a lot, and have no angst because you didn't spend less and are, therefore, getting less than what you paid for - you're doing fine.
My opinion (you asked for it), is this. If YOU are happy and enjoying the music, have spent little, and have no angst because you haven't spent more and are, therefore, missing something - you're doing fine. Or, if YOU are happy and enjoying the music, have spent a lot, and have no angst because you didn't spend less and are, therefore, getting less than what you paid for - you're doing fine.