I own a Middle Atlantic rack for my main system, and I agree with SH on both points: they're excellent, and they're pricey.
Actually, more pricey than the rack itself were the custom rackmounts I got for many of my components. At c. $90 a pop, it doesn't take a lot before you've exceeded the cost of the rack in accessories.
BTW, if you ever plan to move ever, check out their Slim-5 racks. They ship flat (cheaper) and can be disassembled and reassembled later, unlike MA's other racks.
Jeff