Bought my current speakers in mint cond. back in 2005 for $2500. I don't know what the list on them was back then. The new version lists at $7500 per pair.
At that time I had a Jolida tube integrated and Jolida tube cdp. Liked the sound.
Upgraded to Wells Majestic integrated, kept the speakers. Liked the sound even better.
Upgraded from Jolida CDP to Moon transport feeding Aqua La Voce S2 DAC. Kept the speakers. Again, nice improvement!
Upgraded from $3500 Wells Majestic integrated to $6000 Hegel H390. Kept the speakers. Massive improvement! It was at this point that it became clear that I'd never really heard what my speakers were capable of!
This week: upgraded Moon Transport to Jay's Audio transport. Too early to report definitively but at the onset, resolution, PRaT and bass control are all noticeably improved. We'll see what happens with burn in but I still have no reason to sell my speakers!
I'm simply reporting my experience, here. YMMV.