Audessey vs MCACC vs YPAO

[PlacervilleGuy]

When I bought my Pioneer Elite AVR, oh about 7 -8 years ago, automatic setup and room correction systems were fairly new, and those who employed them had their own proprietary systems. These "auto-setup routines" were mostly panned in the AV press as "dubiously effective" to "I left it off".

When I bought my Pioneer, their MCACC system had been getting moderately better press, and I've been pretty happy with it. I am one of the folks who finds it works pretty well, and definatly makes music sound better.

However, in the intervening years, Audessey came along and in a few short years became THE auto-setup and auto-EQ technology in the AV industry. If the AV press is to be taken at it's word, it is the ONLY one that "actually works". At least it is the only one that the AV press seems to actually USE and like the result.

Audessey's big trump seems to be that their algorithm uses 3 - 8 measurement positions, where my unit with MCACC only does ONE.

But I just read a review of Pioneer's new Elite AVR and the reviewer stated that MCACC "made everything good". This is the first reviewer I've seen who made positive statements about a non-Audessey auto-setup. So, my question is, has Pioneer updated it's MCACC to try to compete with Audessey, in that MCACC now also measures multiple seating locations, and does a good job of it? And what about Yamaha's YPAO? Who's got the best room-correcting auto EQ??