I would really like my Laundry room sink to be white, and it will be a drop in on formica.

I will be using it frequently for cleaning up paint brushes, etc. Which material (in white) is going to resist stains best? The plastic/acrylic, cast iron, swanstone type, etc. I've received conflicting info from plumbing showrooms. I am willing to go to a kitchen sink single bowl if the material is going to be more stain resistant and is not available in laundry sinks.

Thanks!