Has anyone had any experience with the composite granite kitchen sinks?

I am torn between 2 brands; Kraus (made in India) or Elkay Schock (Made in Germany). The Elkay model is mostly quartz based while the Kraus is mainly granite based. The first Kraus sink was cracked in the corners and I had to return it. So that left me uneasy. The next sink was OK with no cracks.They are both priced the same.

Any input or experience with these sinks?