Loveless might be a great way to break in those speakers! Not hifi (I believe Kevin Shields had the band perform inside a Hoover to get the right sound) but what a great record. If you are still on the fence after 500 hours, consider really working on speaker placement. The Sumiko Masters method is one way to do it that can be relevatory and importantly is based on your own ears.
Good luck and let us know if you make an amplifier change.
Good luck and let us know if you make an amplifier change.