I got the azarashi body too. What I would say, is that overall there is more room. However as said before around the center of the body (along the bottom of the side "window") it is lower than the tamiya body.
This is how I layed out my electrics for the tamiya body, but with the azarashi body, I had to route the wires from the ESC to the motor through the drive belt (which is neater anyway). In order to get at the screws to get at the motor, the ESC is mounted with velcro.
Personally I prefer the Azarashi body for fitting stuff in.
The azarashi body looks cool too! I got mine from europe, but had I known that DMS had them in stock i would have bought it there, though they got enough of my money over the last few months!!