Lot's of choices...Corian is one of them - don't get stuck on a single brand, though. Some people prefer the natural stone look. Depending on what you select, real stone can be less expensive. Corian (and similar items) can be scratched, is heat sensitive, but can be sanded and buffed out. You get a true one-piece install. A slab often needs to be put on in pieces. But (not all need sealing), once sealed, is pretty bulletproof. You can get a matching sink (in many designs) for a solid surface built-in sink, too. Since that part gets the most wear and tear, though, another type sink might be better - scratches and discoloration can be a problem as it ages with things being moved around the sink. I prefer an undermount sink to a drop-in,as it makes it so much easier to wipe crumbs, etc., into the sink - the lip makes that nearly impossible, and harbors accumulating crud.
Except for some design choices, I prefer stone to the man-made stuff. Ask 50 people, you'll get 50 opinions.