Look at the beveled edge of the Poise sinks, if you want a Kohler product that is sort of similar. The angled edge is the unique thing; they make a Poise cutting board that slides along the rim. I know of other companies making similar things. Post again to say what aspect you like or dislike.

Davidrol, thanks so much for the help. What I like about the Stages is the stepped side platform, the fitted cutting board and the zero radius profile. But, I'd like something closer to 20 inches. I greatly appreciate any suggestions you have!

Have you seen this Franke sink? You need a 27" base cabinet for it and I don't even have space for that in a prep sink, or else I would be getting it for sure.

Here is a link that might be useful: Franke prep sink

first of all, since it's made of steel, it is easy for you to fantasize and then get what you want, because anything can be custom made in stainless steel. Look for a tight radius steel sink and then weld another piece of stainless onto it. That is what they do, in any case. They take an existing sink, they add more steel around it, and they polish the visible sides. Look underneath some of these composite constructions and you will see the original elements still visible on the underside. Franke, Elkay and Blanco are some of the many companies that are primarily sink companies (who also sell rebranded faucets as a complementary business). Call them and ask what they have. Also, they can be willing to weld anything together to please you, as long as you have the money.

"integrated drainboard sink" are some key words leading you to find something on the web with a similar "stepped side platform" already made and sold as a single product. I know Blanco has, or has considered making, some Silgranit sinks with an integrated flat part with or without runnels. These are common in Europe, and they save money (good for first time buyers) when you surround them with cut pieces of countertop material (wood, tile, or large material with seams meeting the counter...).

I'll try to think of other key words leading you to another option, an ultrashallow secondary sink. I've seen a Franke product that has that. It's about 1" deep and i remember it's integrated with the big sink, so it becomes a single product. Speaking of which, look at the Beach BBX sink just to get an idea of how complex a composite construction can become. There are more and more miniscule strainer sinks with a separate drain but attached to the big sink and sold as a single product. On http://www.frankeksd.com/ you can see it. Also on that site are images of their steel sinks that have bumpout grooves halfway up the sink wall, to hold grids, strainers, cutting boards and more. These can be welded onto any other stainless sink.

Ikea has a new sink with tight radius corners. This is a good start. ( http://www.ikea.com/us/en/catalog/products/S79888699 ) . Welding a rectangular drain board on one side is a straight line to weld (not complex to think about or to perform). Weld one on each side and you have a replica of Stages, with a bowl about 22"w inside. Weld a 1/2"h strip all around the perimeter and you have sunken it 1/2" more.

You can have the steel drain board made separately and just let its edge overhang the undermounted stainless sink like the IKEA Bredskar sink.

You can have lateral support grooves made separately as a part of your countertop material edging. An Ogee edge, or similar edge, along the sink opening. Slide cutting boards and low profile strainers back and forth along them.

Reducing a wood cutting board down to size is a perfect project to give to a young teenager for a school project. Shaping the exterior edges so that it meets the shape of the steel form is easy. I did this with the bamboo "Breville toaster oven cutting board" accessory that Breville sells ( http://www.brevilleusa.com/bamboo-cutting-board-and-tray.html ) to go on top of the toaster oven. I reshaped it to look almost identical to the K-3140 Poise bamboo cutting board. ( http://www.us.kohler.com/onlinecatalog/detail.jsp?item=8091402∏_num=3140 ) ; identical except half the weight and with silicone feet that resist heat. Since it has feet, I can place it on my induction cooktop right over the controls.