Everything I'm reading on the net leans to rounded corners for ease of cleaning.

But if you really like the look of the square corners (Zero Radius) and it "goes" with the look of the home then you may like it better.

The most common drawbacks of Zero Radius sinks (from this site Homethangs.com)...

Of course, zero radius kitchen sinks aren’t without their drawbacks, too. The very features that make them so visually stunning and desirable also introduce a few unique difficulties into the design. Most notably, the sharp 90 degree corners on the sides and bottom of the sink can be much more difficult to clean. You’ll need to spray regularly and occasionally scrub the corner-crevices with a brush to keep gunk from accumulating in them. This might not be a significant problem when you first get the sink, but many users report that problems with cleaning become more pronounced as the sink ages, usually after a year or two. And the ultra-flat bottom of zero radius kitchen sinks can also occasionally hinder drainage, meaning you’ll need to spray a little extra water to ensure everything in the sink makes it down the drain. If you don’t mind a little extra cleaning, this shouldn’t be an issue, but it is something to be aware of before you buy.

Those are both beautiful sinks you've chosen, go with what ever will make you happy.

(and get a high gauge stainless steel, to help prevent denting)

Rounded are much easier the clean, it’s my biggest gripe with my current kitchen sink.

I personally prefer the look of round anything over straight angular lines but if your tastes and house are into a more modern look, that's all you need to know :)

If you rinse or soak or wash by hand in the sink, rounded corners make it easier to swirl clothes around.

I ended up getting a square one with a soft corner. Check out Franke Pescara Sink. It looks very modern.

Thanks! I’ll check it out!

The Quatrus R15 isn't zero-radius unlike the Quatrus R0 so it still may be reasonably easy to keep clean. Owners appear to like this Ruvati RVU6100 which is quite square. Also Ruvati RVU6121.

Our kitchen sink is a stainless steel farm-style type. The bottom is perfectly flat. It is a hassle to clean this thing-water drains fine but grit and matter stay on the surface. I know our water bill would be less if it were a bit more angled downwards to the drain. It being a kitchen sink it has a wire rack that fits in the bottom and that adds to the difficulty of quickly cleaning it. I think without the rack I would probably use the sprayer less and just wipe it more as the water is draining. Most likely a LR sink won't have a rack, and won't have coffee grounds or other foodstuffs to deal with.