Martin Logan speakers

I have not listened to the ML Vista's, but came within inches of buying a pair of NOS Summit X's from a dealer.  I had heard the Expressions, which replaced the Summit X's and then listened to the Summit X's-- big mistake.  Martin Logan has not, and cannot, get the bass depth and timing right on these speakers.  Listening to a piano concerto, it was among the best sound I had ever heard-- from any speaker.  Put on something with a set of drums in it, or a bass guitar, and it goes right down the drain.  I walked away from a brand new set of Summit X's at $5,400 for the pair just for this reason.  The Neolith's, with their huge size (and more than $50,000 price), may have solved the bass problem.  But you didn't ask about spending $50,000 in your post.  Trust your ears :)

Here in Switzerland you see Martin Logon very often combined with big McIntosh amps. The advantage is these solid state amps can deliver 2-8 Ohm the same power. And as far as I know Martin Logan need a lot of power and are not that tube friendly (not 8 Ohm).

there's a mcintosh dealer in whittier ca. that's been around since the late 50's or so. they like matin logan speakers.

I’ve been running my Audio Research VT100 with a pair of Martin Logan Aerius for years and have thoroughly enjoyed it.  

I had a pair of ML Aries "I's" for a couple of years and drove them with a ARC Classic 60. My best day in audio was the day I sold the ML's and bought the Legacy Signature III's. 

Lute, guitar, piano and small jazz trios are fine on the ML's, but when you want to move some air .... well ... 

Frank