Quartz, Silestone, Cambria and other quartz. This is an idea counter top surface for a bathroom. Cost prohibitive though. Usually about $65 a sf. But most bathrooms don't have many sf.

Quartz is very stain and spot resistant, and I think it might go further in terms of desirability to future buyers than many Corian choices will/do.

We put corian in the master bath and have been VERY pleased with it. I do like the forgiveness as you mentioned. We also opted for integrated sinks which has been great. I like the ease of cleaning and like that I can scour with barkeepers friend when needed - for the water and soap marks as you mentioned.

It's also very forgiving if you happen to drop something on it - things don't break as easily which is a bonus for me.

I'd do corian in a bathroom again in a heartbeat.

I had Corian on a bathroom vanity for almost 20 years. Just took it out to remodel the bathroom and the top was still in excellent condition. I was actually able to sell the vanity and had several interested parties.

I think choosing a neutral quality countertop is important for resale value, as no matter how expensive the material might be, it should be one that appeals to many people.

If you choose a high quality granite that was a very unusual color, that could affect the value of the investment you made.

I have had solid surface and I have had granite and both worked well. I did seal the granite at least twice a year to make sure it stayed water resistant.