Ive got the dual sink and am very happy with it. I guess you could consider it to be flat bottom, but the corners are rounded and I have a faucet that extends so am able to push food into the garbage disposer. I have had no problems with food sticking to the bottom. It’s probably the best sink I’ve owned, the gauge of steel makes it solid and practically noiseless as other sinks.
I’ve also got the under mount so there’s no nooks and crannies four food to build up.
Hope this helps. see less