For what I have read, I'll keep my Model 312, because I don't want to use the 625 to make coffee in the morning, listen to the news in my tuner and drinking coffee before go to work. As usual.
And the sound will not beat the sound of my Model 312/500 watts with dCS Paganini and Criterion. I use Nordost Odin power cord, IC Siltech Empress Crown and for speakers the Stealth Dream V10T.
As Clavil said the 3D is outstunning.
I can buy anything I want, but I'll keep the Model 312.
In my opinion we have the luck to leave in the same time that Jeff Rowland projected the 312.
This device will be legendary in few years.
As Jeff Rowland said, the Model 312 is the joy of my life.
It's true, man.
But I have just one consideration, I mean the Criterion, because Fernando Andreti review the DartZeel preamplifier and wrote wonderfull things about this device, and even said the DartZell beat his top of the line Accuphase and he bought one DartZell.
Let's see