I've just went thru a similar analysis. I concluded that repairing and refacing cheapo builder cabinets and topping them with corian is a bad investment. The corian is going to cost about $150-200 per lineal foot. For only slightly more we went with new cabinets and a formica top wih a nice wood edge. The formica costs about $30 per LF and if I tire of it in 5 years it can be replaced and I still have new cabinets.

I've decided to go with new oak cabinets - custom made.

Looking now for a good solid surface top now. Corian is too expensive, the "Marble Crafters" stuff at H*** D**** looks cheap and only comes in two colors.

There seem to be a ton of small manufacturers who make solid surface bathroom sinks (it's pretty easy technology), but seeing one in person is the problem.

Any suggestions?