I have had the sink installed now for about two months.  I like it, in general, but it does have a tendency to stain.  I have to be really careful if things are sitting in it for a while.  I did buy the stainless steel grid to sit in the bottom.  This helps with the dishes, etc., but does not help with any food items which may slip through and sit.  Living with another person who does not clean up after himself makes for a constant vigil on sink maintenance.  Overall, though, I had a composite sink (black and not from Karran) and I liked it enough to purchase another.