We have had both, Ceaser Stone Organic White/Raven and Corian Glacier White.
The ceaser stone is great, looks nice, feels like stone, but can chip and hard to or cannot be repaired. It is difficult to scratch but can stain if you try hard enough.
We now have white corian with 60mm edges, we have three very long benches so it is seamless with no joins. It looks just as great, can stain but easy to get off, does not have any joins at all which looks great. It gets very fine scratches, but you really need to look at it closely on an angle and in the right light to see them. If you are going to cry about fine scratches then corian is not for you, but really you wont notice unless you look very closely. You can stain corian but with a bit of gumption it comes off easily. Corian is meant to be really hygienic.
You can't take your hot pot off the stove and put it down on the Corian, but they will give you some nice off cuts from your sink cut out which you can put your hot pots on.
You can always repair Corian/Hannex etc and buff it up later if it gets really scratched up. I don't think it is as shiny as the Ceaser Stone, but it still has a slight gloss/shine on it. Obviously you can buff Corian up so it looks like a mirror but then you would see the scatches more.
Corian does feel a bit different but its not like we use it as a bed, although I do sit the kids on it occassionally
Corian was much much cheaper than ceaser stone. There was no extra cost for thicker edges with Corian.
I would go Corian again and you can never go past white and there are some nice colours now and stone like textures. However, for a small bench with no joins and where there are no budget constraints stones like Organic White look really nice.