8/64 inch

if i measured correctly, my high on my Amber Trails MJ is 2mm@12th/1st and 4mm or 2/16@12th/6th
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It is as it came from factory floor to my door. (it was a warranty replacement) except i use Custom Lights.

I did not measure like that.

Finger pick & light strum. Elixir Nanoweb lights. It think the break angle over the saddle might have more to do with sustain & volume than the action. Although I don't believe it. Maybe all solid wood guitars are affected by that more. They say longer scale (25.5" vs. 24.75") increases the string tension and gives you more volume. Probably a little.

I have a couple of vintage Yamaha's (all laminate) with low saddles and action that are the loudest guitars I have. Don't know why. Don't care. I'm more of a quiet by myself player. Hey, I'm barely a player!

I need 5/64" or 78 to 80 thou at the 12th fret whilst fingering the 6th string at the 1st fret.  And I'm a fairly aggressive strummer.

Any lower, and I'll get too much string buzz, a LOT of string buzz actually.  Any higher, and barre chords start to become not only painful, but sometimes just impossible, depending on how high the action actually gets.

Technique is important here too.  If I pound on the guitar the wrong way, then I'll still get a lot of string buzz.  What I want, is the ability to strum aggressively, and to flat pick, clean with no string buzz, but just a little string buzz when I go for broke to signal that I'm in fact dong that.  A wee bit of string buzz when going for broke is actually a nice effect to my ears.

In order to have that playability, volume, and sound I want, it's gotta be within a few thousandths of an inch in the area of 5/64ths.  That's just how I roll.   

That's exactly what I like.  I agree, much lower and it will buzz, any higher than 3/32" and it gets harder to hit chords without possibly touching other strings, but only if you get away from the first 3 or 4 frets.  The nut action has a lot to do with that too.  I picked up a couple of guitars for the schools that the nut action must have been .04 too high.  Cowboy chords where tough!

CTGull , I hear you.
But the easy way to adjust the saddle/string height is, put a capo on the first fret slacken the strings, remove saddle, stick a couple of thin cardboard shims in saddle slot, put saddle back in, tighten up the strings a little, remove the capo, tune up to pitch, and listen to that beautiful guitar.
If you have a string winder should take about five minutes.
There will be no. Need to compare guitars, the sustain and tone will be so great you will tell straight away from the first pluck.
If you don't need the extra volume, lighter finger picking will be gentler on the fingers.
If for some reason you don't like the sound of the higher string action (but sure you will), just remove the shims, and you are back to were you started.
If you try let me know what you think.