Avalon: are new models quite better than older ?

Luke: I am an owner of both electrostats(Acoustat 2+2s) and the Avalon Radian (not HC) with both tubes and solid state.
I would state that the bass definition of the two are actually quite comparable but the quantity of bass is higher in the Radians. Midrange goes to the Avalon but the treble region belongs the the Acoustats. The dynamics both macro and micro goes to the Avalons. Along with imaging and soundstage width and depth. Clarity goes hands down to the Acoustats.

In comparison to other Avalons I much prefer the Radians to either the Opus or the Eidolons because of the integration of the bass to the midrange drivers, but the inegration of the midrange to the treble seems quite better in the Eidolons and to a lesser degree the Opus. Eidolons Diamonds are in a league of their own: the treble and midrange integration is superb along with a tight taut bass.

Since I like the cello solid state electronics seem to work better than tube amps. I have an all spectral setup along with MIT cables. I can listen to Schnittke, Schubert,
Beethoven, my beloved Hank Williams and Yardbirds for hours and hours without any fatigue

Shubertmaniac, great post, thanks ! I'm so glad that many owners prefers the discontinued Radians vs the Eidolons, my initial feeling is right ! Thanks again to all audiogoners.

FWIW, I know of a prominent Audiogon member who went from the Ascent II's (w/ Muse Model 18 subwoofer and its appropriate personality card) to the Eidolon with no regrets.

Just returned from the Italian Top Audio & Video Show, I've listen to Opus and Opus ceramic: yes, the bass is fast and really articulate... Faster than the previous Radians and Ascents ? I don't know. However I've noticed a very little difference in the sound between the ceramic drivers and the woofer... anyone thinking the same ? And the dynamics ? No match between Opus and Radians, bigger the drivers and cabinets better the dynamic range. Thanks, Luca.

Nothing to add but now I'm powering the Radians with the Pass X600 and I couldn't be more happy ! The sound is fast fast fast, dynamic and so musical... Do not underestimate the older Avalon guys, they are still incredible great speakers, trust me.