Nomo,
Whether it is full version of YPAO or not, I don't know. Like we discussed, the site does not do a good job of describing the different levels. I didn't even realize there WERE different levels until this discussion. But the 750 definitely does handle EQ according to the manual. In the manual for the 5760 it only lists "Wiring level, Distance and phase, and size" in the auto-setup section, no EQ listed. In the 750, the manual has a specific section discussing the EQ and what it tweaks.
As for cosmetics on the 5790, there are definite differences. For me, they weren't enough of a priority for the extra $ because the receiver will not be very visible. But for other situations I would definitely prefer the look of the RX-V line.
BTW, how do you like your new baby???
Mike