I'm building a home which will need countertops for several bathroom vanities. I'm torn between using Avonite with integral sinks OR granite with undermount porcelain sinks. I like the integral sinks because they are so smooth and clean. I'm concerned that the undermount sink with granite will be a dirt collector under the rim yet granite would probably be more durable.

Your comments and thoughts would be most appreciated as you folks always think of something I haven't!