I wanted metal over wood for my cabinets. Really a personal preference and harder to work with. But here is my logic-
1) Cool factor
2) Look good in my office
3) Contain internal fires better

I chose two of these cabinets in white. They are Sandusky Elite. They have 3 point locking handels(recessed), heavier guage steel, and measure 78h x 36w x 24d.

Cost $290 a piece at staples, so $580 total and included free delivery.

Note - SuperCloset uses these i think but use the cheaper version. they are also 72" inches tall; so these are 6" taller. If i remeber correctly they also charge an upgrade fee if you want white.

Here they are -