I would agree that buying something you haven't actually heard yourself can be a mistake, however in some cases it is not possible.You're the one that needs to have a view colmo.
And you need to have heard both pairs in order to make the right decision.
If you have heard both pairs, nobody's view can help you.
And the room.Think it'll mainly boil down to the amplification.
Totally agree. As the OP has divulged no info about the rest of his system, I had to start somewhere.And the room.
The difference between acres of hard floor / wall bareness and a proper environment.....
makes an absolute mockery of any 'burn-in' effects.
(Though I realise that's not what you were discussing - but room can certainly negate otherwise worthwhile differences).