Elkay e-granite sink or Blanco granite

Any experiences?

I thought I'd go with stainless steel -- but we have iron in the water and the site on how to manage the sinks states that iron in the water will stain the sink a rust color eventually. Plus you have to clean in the same direction and avoid bleaches etc. etc. with the stainless steel.

I saw the Elkay sinks at a plumbing store and really like the look and the feel.
No staining and can use bleach and other cleaners with chlorides (important for paranoid medical professional)
I have heard that boiling water poured in it (without running the cold) can cause issues.
I know that Blanco makes this type of sink also. Anybody have one and what do you think about the granite composites in general?