There is common myth that the zero radius sinks are difficult to clean. I've installed a hundred or so, and have yet to hear that complaint.

I have a zero radius kitchen sink and have had zero problems. The sinks in my bathroom also have square corners and, agsin, no issues.

We have a Zero-radius kitchen sink (Julien). No issues cleaning it. Have been using it since spring 2007.

Most pull down faucets nowadays, have powerful sprayers. We have the Koehler Artifacts. It does a fantastic job of chasing food bits from the sink corners, into the drain. Beyond that, I periodically wipe down my Franke sink with a Clorox wipe, or use a blue scrubby sponge with dish soap.