Thanks for the input, I have an all tube Primaluna Prologue Integrated Amp, which completely WOKE those Theos up. I hade a Musical Fidelity I.A. first, then a Rogue Audio Sphinx 2nd, just picked up the Primaluna couldn't be happier so much more bass. I hade a separate Rel sub and I disconnected...
I'm am happy with my Theo's and wasn't looking to change but I stumbled on to a killer deal on a new pair of ESL 9 brand new. Do you think there is enough of a a difference to justify the upgrade? Would be anywhere between $500-1000 out of pocket plus 10 hours of driving to get the new speakers...