Corian, all the way!!! Best sink I've ever had!!! Had this one now for nearly 15 years - looks like new.

Love my extra deep siligranite sink!

If you go w/ stainless, be sure to add a grid so it won't get scratched up.

There are tradeoffs to all sink materials. Stainless scratches easily, but is easily refinished. Quartz is very tough, but nearly impossible to repair. Chip fireclay or cast iron and you'll look at it until you replace the sink. Corian and other acrylics are easily refinished to new, but can "bruise" sometimes deeply as well as get hot pot marks. Gouges can usually be repaired inconspicuously.

Speaking as someone who rolled the dice with fireclay, stainless is by far the most forgiving sink material.