Building drawers, or modular drawer/cabinets?

[72lb4x4]

My antique Snap-on top and bottom box is always in the way, so I'm thinking of building or buying some drawers or a cabinet setup to bolt to the workbench.

The space under the bench is about 29x58. The bench is 3' high, 6' long, and 3' deep. It started life as a motorcycle building table and got shortened from 8' long and new longer legs added after the bike was rolled off. I've since added some shelves mounted to it above the top.

Being lazy, I'd lean toward buying a couple banks of drawers in a cabinet. I suspect this will get expensive.

Being cheap, I'd rather build something from wood. Probably a decent hardwood for the faces, and maybe poplar for the sides and backs.

The wood solution makes me wonder about drawer bottoms and wasted space vs the compactness of metal drawers.

Of course, when I start thinking of doing the drawer thing, I start to think the workbench will be outclassed by the drawers and so it should be scrapped and a new one bought (in case of bought drawers), or built.

Anyone have a similar setup, or thoughts, and care to comment, or offer an opinion?

Here are a few links to the modular solutions:

http://www.storloc.com/
http://www.stanleyvidmar.com/products/cabinets/drawers