We had Swanstone in our previous house... a Corian look alike, but you can pour boiling water into the sink and it won't crack like Corian; plus it was less expsensive. I loved it!
Now we have dark granite in our new home... it shows every little crumb and piece of dust. It's beautiful, but high maintence. And it drives an OCD person like myself nuts constantly wiping off crumbs!
Wish I had the Swanstone again... it hid crumbs and was super easy to clean.
www.swanstone.com
That sounds a lot like the siltstone that we ended up going with. I can not wait to see it in person. Now if we can just get these cabinets in!