Mic'n guitar cab?

I'm a guitar tone chaser by nature.  I've been searching for my "holy grail" guitar tone for many years.  My live tone is now very close to what I hear in my "minds ear."  I'm happy with my live tone.  Now, the trick is to get that tone recorded.
 
I've got a half way decent collection of mics that I can use to record my tone.
 
Mics:  2 SM57's
Senn e609
Senn e906
Senn 421
Heil PR30
Royer 121 ribbon
Senn 421.
 
I've tried every imaginable combination of the above mics.  I've gotten the best results by using a Senn 421 on one speaker of my 4x12 cab and a SM57 on another speaker in the same cab.  The mics are positioned identically about an inch and a half away from the grill and aimed directly at the point where the dust cap meets the speaker cone.
 
I generally like the recorded tone I'm getting, however, I struggle to get a good thick mid-mid tone.  There's plenty of bass (I use a hi-pass at 85) and there's plenty of highs.  There just doesn't seem to be enough of the mid "vocal" frequencies.  It's almost as if I've scooped out the mids at the amp, but, that's not the case.  I have plenty of mids coming from the live rig...it sounds great in the room.  I just can't seem to get that great sound on "tape."
 
Of course, I've moved the mics all around and have tried countless different positions...close, but no cigar.
 
Any tips would be greatly appreciated.