How do I know which pianist CD I should get? Should I follow the public opinion, or follow my instinct, or get the lots and compare from one to other.
Get as many different recordings as possible. It's not a good idea to me just to say "Brendel is good - Ashkenazy is bad" or something like that, if you want to find out how to play a piece. You should not try to imitate others, but to develop your own understanding of the music. It's a life long process
I will say for your own thoughts, without explaining further, that obsession with originality is obsession with death.
Presuming that you mean originality as "fidelity to what the composer wrote", I can't see why that should be "obsession with death".