Kappa 9 vs Martin Logan Quest Z

The difference between the two would probably be best know to Bill LeGall of Miller Sound. He is truly a specialist in Infinity speakers and has worked on and improved numerous Kappa 9s. He is Wlegall on Agon just read his feedback. You may be able to send him an email for some really knowledgeable advice.
Since he is not currently selling anything here to my knowledge, there is no financial conflict of interest to disclose

I understand Bill is an authority on Infinity speakers, but Infinity is only half of the discussion.

In defense of my statement about Bill, he has worked on probably every major speaker marketed in this country his knowledge is comprehensive. He has been doing speaker repair and light modification with a perfectionist skill for listening as well as hand labor that few will ever match. He has been immersed in it as his only profession for in excess of 50 years. He is a personal friend who has recommended to me that given my tastes at the time to try Dunlavy and also Mourdant Short. I know he personally uses vintage Patricians and Acoustats in addition to one of the few unmolested sets of IRS V's. He once owned Arnie Nudells show off pair but sold them. I heard them and was floored.

Thx for all the advice, I read it all and will read more too when/if any more appear here...

So (Thesoundhouse) what about a K8 and Quest Z matchup ?

I'm tending to go outside the box this time, but we'll see. I've had Magnepan MGI (they had a 'nasal' sound in a narrow band of the voice freq range, a little similar to the L100's I have/had) MGIIa, and have some SMGa's too. Many other box speakers too...ready to try the Quest z's I think...

Mechans, What is your point? I know Bill is very good at repairing speakers. In fact he has repaired speakers for me in the past and I have purchased many speakers from him, but when it comes to listening it's just an opinion.