Koetsu Blue Lace Onyx vs. Coralstone

The more expensive ones have a more refined sound. The lack of higher frequencies are not important, because the soft bass ability will be compensated with the improved midrange influence from the stone bodies.
The earthy feeling and sound of the Coralstone is special, it is a trip back into the History and I always did like the Blue Lace most with a Martini in my Hand - or some more - when listening to it. The longer I listened to it, the more I saw the "Gestalt" of tones.

Stringreen and Syntax raise a cautionary point. Candy and alchohol both metabolize into sugar.

Overindulgence may lead to confused mental states, witness Dr. Lewm's patient obsessing over silly colors, or obesity.

Withdrawal management programs are widely available.

Dear Lewm,
You must always have in mind your special OTL/ESL system
when most of the rest folks here we are listening with set-ups that a Koetsu has nothing to add, but most likely to hide.

I've owned an Onyx Platinum for a couple of years now and in my experience the Koetsu's are overpriced and agree with stringreen's comment about them being "eye candy".

I'm now an Ortofon a90 user and it's superior in every area. The Koetsu doesn't even come close to what an a90 can do.

...I now await a barrage of complaints from Koetsu owners (who haven't heard the a90, of course!).

No complaints. To each is own, and glad you're enjoying the A90. I would think Koetsu owners may be curious what you use for a phono stage, and what TT/arm you used. That said, all that matters is you are happy w/ your Ortofon.