Evolving from a avr to an av processor. Benefit?


After upgrading to a great McIntosh multi ch amp and hi end speakers, I am considering upgrading a marantz avr to an av processor.  
Been told the avr is a weak link and there would be improvement in sound clarity, separation, etc. and maybe there would be.  Curious if others have seen discernible value when replacing an avr with an av processor.
All about feeling better about your components and trying to discern real value in making a hopefully near final step to a major upgrade cycle in home theater system.  
emergingsoul
OK MC, I gotta say, if your gonna keep tootin' the same horn you're gonna wear it out. You're gonna get carpal tunnel syndrome, at the least.
Swap tootin' hands, maybe it'll sound different. 

As for the best, come on now...It couldn't get any better if it already is?
So which is it, already the best or is there room for "getting better"?
Just askin'

I know it's lonely at the top, (God knows) but trust me you're not  ALL alone.  Let me move this 400 lb bohemi (that a female Bohemyth) into the launch position. I'm gonna turn it up down here in the Bay area.
Only one speaker because it knocks to many trees down on the way up.

Tell me how does "Girls just want to have fun" sounds" in Seattle.
So there, hows that for tootin'. That a definite HONK! ay?

I can turn it WAY UP up if you like.. Go for Anchorage. :-)

I feel a little James Brown comin' on. Get on up-a', (yea) Get on up now-a'  I'm a.............................................

Regards
The best AVP known to man at this time is from a French company named Trinnov. The Altitude 19 or Altitude 32 has no competition. Starts at 9k. Take your pick. 
Of course an upgrade to an av processor will be used for both ht and stereo.  An avp would join a b&w 803 d3, and b&w center htm2 d3 as fueled by a mc255 amp.  
So how much happier will this component family be if an avp joined the family (eg.  Arcam with dirac)? Seems an avp without Dirac these days could be problematic. Audyssey from marantz appears to be disappointing and troubling. 
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I have two processors the Krell Showcase for movies and the Luxman CL38U SE for music. The difference between the two for music is night and day.