That's funny. I found out about the same sharpie 'tip' last week. Posted it in the tool forum.
Stainless is the only way to go.
Let me put it this way: Snap-On offers a butcher-block top, and a stainless top upgrade to every one of their toolboxes. So do Mac, Cornwell, and Matco.
The stainless one costs more than the wood one, and yet every single box in our dealership's shop, and every other one I've been in, has 1 of 2 things: A stainless top, or the factory rubber mat protected by rags. I've never even
seen a butcher-block top on a professional tech's box.
Stainless is great. Nothing is easier to clean up, although eventually it'll become covered in thousands of tiny scratches. But unlike wood tops... if you're really a perfectionist, most of them would probably buff out with some mag wheel polish.
