They look to be similar in size. I have the Performa 1 3/4 Medium Bowl because I wanted 2 sinks with the low divide and I wanted one bowl to be large. I love the width and depth of this sink. It's been great for washing cookie sheets and large cookware. Whichever you choose you will be happy with the looks of the sink.

Error on the side of too large!

Error on the side of too large!

I'd go larger, within reason, if you have the space. You can always get a cutting board or other tool to cover part of it if you need the workspace. Plus you can put a bowl or tub of water in it to make two basins if needed. With a smaller sink you can't do anything to make it bigger, other than put a tub on you counter as a second bowl.

I would go larger as long as that does not cut down on your cabinet space too much. The larger the sink, the smaller the cabinets on the same run.

OH, man, go large!
Try fitting a pasta pan or big soup kettle in a too-small sink.
I love my Kohler apron farm sink, but the bowls are just 9" deep and my big pasta pot won't fit. I have to wash it in the dump sink in the mud room.

Bad. Very bad.