Rushton, mmporsche, did not state that 25K would be the point of diminishing returns, he said he had a budget of 25K.
You stated that 25K would not be your point of diminishing returns, and included the OP. I have always wondered what would be suitable for someone who does not consider 25K as the point of diminishing returns, and I'm still waiting.
I realize you wouldn't want to announce to the world that you had a 150K turntable in your listening room, so I'm just asking what do you consider "suitable"?
Enjoy the music.