Some one did a costing of a Current PC for studio Use it was about $1500. Using a new Mac Pro trash can as they call them, it was approx $8000-$10000 the reason being is you cannot add HD Audio cards Uad internal cards you had to buy external boxes to put them in then join them to the trash can via FireWire thunderbolt and usb. These all install internally on a PC. But I do love the look of the tall Aluminum Mac Pro. Cheese graters as they call them.