Corian kitchen benchtop & sink: what's your experience?

I have a white Corian sink and benchtop installed in 2007. The benchtop is curved and that is the reason I chose Corian as the joins cannot be seen.
While I get many compliments on the look of it, I would not use it again.
The sink is extremely difficult to keep clean and the product I use to clean any stains, including red wine, off the benchtop does not remove the stains in the sink, especially if the stained cups/dishes/glassware have been sitting in the sink. I have resorted to more harsh products, eg, bleach, which do remove the stains from the sink, however, they tend to dull the Corian over time.
In late 2019, a 10cm crack appeared on the benchtop - unfortunately the 12 year guarantee had expired two months prior. The cost of fixing it was $700 as the whole of the benchtop and sink had to be polished to match the repair.
I also found it difficult to find someone to repair it.

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