MOTM

>>>>
Why is star grounding better than a D*****r style ground bus?  The 
circuit
topologies are equivalent, it seems to me (the MOTM power distribution
board being analogous to the ground bus).
<<<<

I'm sure Paul can and will answer this, but as I understand it:

Equal length paths from termination points to the power supply =
 
Equal resistance from power termination points to the power supply =

Equal voltage drop at each termination ground (assuming roughly equal 
current return on each ground) =

No voltage difference between ground points =

Lowest hum and noise.

Or something like that.

Moe