We had Corian worktops installed in our kitchen 7 years ago. Without doubt it is the best surface we've ever had, and we would never choose a different option. My wife loves it. We have upstands at the rear and side edges, so really easy to clean. The sink is integrated, so no overhanging edges or joins where dirt can build up. The (induction) hob sits almost flat in a cutout. Just fantastic. (As much as a worktop can be....). There are some surface marks that you can see if you look with a strong light in the right direction, but if they ever bothered me, I can just get my sander out and give it quick once-over with 220g, and it'll be back to new. I haven't felt the need in 7 years. (The installers used a Festool sander, with Brilliant discs.)
Possible problems
We've a careful couple and look after it. Very hot dishes are always set on trivets (I made some out of the spare cut-out pieces, and although these have been totally abused, they still look fine).
Sharp objects will mark the surface, so we never cut directly onto the worktop.
There's potential for things like turmeric to stain the surface, but we've never had a problem if you wipe up reasonably quickly.
We never pour boiling water directly into the sink, unless there is some cold water already there.
Don't get a solid colour (especially dark) if you want to hide imperfections/joins better - we have Silver Birch, which is a pale "aggregate" pattern, and that works beautifully.