We have Corian that we love. It is lighter colored, with a pattern and does not show any scratches. Very easy maintenance and love the integrated sink - so easy to clean! I have always used a hot pad or trivet for pots, so heat resistance is not an issue.
When we bought the house, it had dark green formica that was horribly scratched and buckled behind the sink. With 3 boys in the house, I wanted durable and easy care. The kitchen designer at Lowe's suggested Corian as the most bullet proof, and we are still happy with it 12 years later.
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