one thing i haven't done any research on. we're going to be building a house soon, and I need to get my ideas straight. the way i see it, there's 3 choices for me - granite - corian - concrete The sink will most likely be stainless. The appliances will most likely be black (unless i can talk her into a Viking range, but i'm not holding my breath). Corian seems like it scratches too easily, so that's out (if that's true). Looks nice, but i don't want to baby it. Granite is nice, but is a rather stout upgrade in price. I'd like to spend the $$ elsewhere if possible, but it's still a choice. I've never seen a concrete countertop in person, but in the pictures i've seen, it looks fantastic. Are there any downsides to it? How's it priced compared to Corian or Granite? Do they sand it down to get a smoother finish? How well does it hold up (i would imagine quite well)?