Hello Leroy...
Please keep in mind that I am only asking for the speaker technology that sounds the most realistic, and not for a speaker company or a speaker itself, as I think that that would be impossible for anyone to say.
Hey!
Leroy. I think you are basically asking for a "PERFECT SPEAKER"

I'm sorry to say that it doesn't exist
As for one single perfect speaker tech... well that doesn't exist either

Every speaker system have compromise(s) some have more than others. And what's realistic to some might not be to others.
First I must say that you are blessed with budget that I could only dream of.

So, with this you will have more options.
But to find speaker you and only you can live with you have to ask yourself a few questions. I will use myself as an example.
I'm currently using DIY Single Driver Speaker without xover... OK maybe 1.5 way since I do have a super/helper tweeter

I've never thought that I would ended up with Single Driver speaker until I ran into RL Acoustique's Lam horn at the audio show in NYC in 2001. Immediately I fell something very special about the sound. Thus that lead me to built my own pair but in mid 2002 and I've been using it ever since. Before that I used to have Magnepan 1.5 believe it or not

After a few months with my home brew Single Driver I realized and came to conclusion of why I like Single Driver.
Here are my criteria of what I'm looking for in speaker.
1. Tonality. Well, it doesn't matter how many drivers, size, type or price of speaker you are listening to. If the tone or overall tonality is not right than it is just junk to me.
2. Coherency. This is probably why I like single driver and still use it today. There is something about it that I can't really explain. When you hear a female vocal or acoustic instruments with range that would be separated in multi-way speaker through a single speaker without any xover, it is just magic to me.... very very intimate and a complete feel to it.
3. Dynamic and efficiency. This I believe go together hand and hand. I need hi-ef speaker for low power SET amp. And most of the time hi-ef speaker tend to have a better dynamic and faster respond than lower one.
Less critical for me....
4. Frequency range. True that 20hz to 20Khz and beyond would be nice but if it ain't got above three criteria than it ain't mean a thing to me.
5. SPL playback. OK, it would be nice to be able to play Telarc's 1812 at realistic level. But who the hell listen to music at that level all the time? So, this again is less important for me. I think as long as I could get 100dB at my sweet spot cleanly I'm OK with that. Well, surprisingly my 6" Single Driver Fostex could do that.... thanks to Levi who cracked my system up 100+dB at one of my Mini-Rave. I had no idea my speaker could do that on those tracks!
Anyway, as you can see this will not fit or for everyone.For example if you like to play music at very high SPL with big room than Single Driver might not be for you. Or you want speaker with wide respond than again this might not be for you (Although some Single Driver speaker does come very close) I love my system right now, but who's know? It could sound like shit to some

So, ask yourself what you want from speaker, what you value most in sound and what compromises you could live with. Than go out and hear all the speakers that could get a hold off. Check to see if you there any near by AC members and see if you could stop by or go to audio shows and etc.
You best bet is to believe your own ears.

Well, good luck and keep us posted.
Take care,
Buddy
