defjef has it right. There shouldn't be any knife cuts in your countertop because you don't cut on it!
I replaced laminate in my house with granite and liked it very much. I wouldn't hesitate to use it again.
On my boat (liveaboard) I have Corian. I have less staining issues and easier cleaning
with the Corian than I had with either the laminate or the granite. My fiddles are mahogany (as is the rest of the woodwork below).
The only issue of concern with Corian is that very high heat can scorch it and in extreme cases cause it to fail. If I need to move something hot off the cooker it goes into the stainless steel
sink or onto a cutting board.
I have cutting boards that fit into the sink cut-out as mentioned above which is very convenient as well as a larger board with a fiddle and opposing alignment braces to fit in the cut-out over the cooker. Cutting boards get cleaned with vinegar water
and wiped down with mineral oil
. There is discussion about plastic v. wood and about proper care all over the Internet
(including credible, scientific and regulatory sources). My choice is wood for cutting surfaces because my reading indicates it is as good or better than plastic for hygiene and definitely gentler on my knives.
Although I did not do my Corian installation
, I have worked with it on a very limited basis before. Cutting it is a DIY job. Bonding it is a stretch. If you can get it cut to your spec by a vendor you can easily do cutouts for sinks and such yourself. Regular wood-working tools seem to be fine.