It can be either. I don't know about Kraus but most manufacturer's will have a spec sheet that shows the slope. Some handmade style sinks (Rohl's farmhouse sinks come to mind) have a reputation for not always draining nicely but something stamped out on the line like Elkay should reliably match specs.

Personally, if other things were close to equal, I'd take an Elkay over a Kraus, for no good reason. :)

Thanks for the reply. Both spec sheets show a very flat bottom.

I was originally leaning towards the Elkay, but the Kraus is 16 ga (not that it really makes a huge difference) and includes more accessories. I can't tell if the Elkay even comes with drains and strainers?

I have the Elkay ECTRU3017R sink. I don't find it to be too flat and the 18 gauge seems just fine. It's not flimsy in any way. It did not come with the drain or strainer. Mine has a disposal attached so I didn't need the strainer. You can order sink grids, though I never got around to it.

I have a kraus single bowl 32". Very happy with it and no problem with water draining. As long as it is installed properly you shouldn't have any trouble. The grate for the bottom is great. Don't use the strainer since we have a disposal.

My sink is flat on bottom with tight corners. Hard to clean. I'm chasing food all around the sink trying to get it down the drain. If I could do it over, I would get something else.