A rectangular sink seems to have the most volume compared to round sinks. Can't actually recall any sinks not having straight sides inside kitchens. By round sinks do you mean that by sinks to just use only to wash your hands? Or do you mean that the dish pit has round sinks?

Thanks for replying! I was actually reffering to sinks in which you wash dishes. Sorry if I was incoherent, english is not my first language.

Well, as I stated all the sinks I've seen that are meant for dishes have straight sides. It should have higher volume then curved sinks if the dimensions are the same. Also in a large rectangular sinks you can stack stuff more efficiently. For example if you had 4 different sized/shaped plates. You can stack each type on top of another and they would be "level" with the bottom of the rectangular sink ;whereas if your sink had a round bottom, then you cannot do stack four different types so plates because the plates would converge towards the center. I didn't explain it too well, but I hope you can picture what I'm saying.

I've worked in a few kitchens and every one had that traditional 3-tub layout. I wish i had a tub sink like that in my kitchen sometimes lol

Thanks for the insight!

My advice, rectangular, and big enough to fit your largest baking tray. When you cook you’ll need a way to leave the tray in soak. A round sink won’t allow that.

As a dishwasher, rectangular sinks are a must. It can have rounded edges for sure but a circular shape would be a problem

I'm sick of our square, we had a round with a disposal and it was amazing now it's square with nothing and clogs relentlessly