20 gauge is too thin. The sink will sound tinny when you drop things in it, and could dent more easily. I personally would only do a 16 gauge sink, but I understand people are fine with 18 gauge. I am surprised these 2 sink choices are all you are finding.

May I ask why you want a top-mount sink?

These were on the U.S. Costco site, see if they’re sold in Canada as well, or something similar.. Many people happy with their Costco-bought sinks.

https://www.costco.com/American-Standard-Culver-Welded-Kitchen-Sink-and-Semi-Pro-Faucet-Package.product.100470957.html

https://www.costco.com/AFA-Stainless-33-inch-Sink-and-Semi-Pro-Faucet-Combo.product.100432602.html

One thing to watch for when you're shopping sinks is the actual measurement of the bowl, especially the front to back measurement. (As well as bowl depth.)

The bowl of the Kindred you linked is 16" front to back.

Franke--17" front to back

Luxart--16 3/4"

Anaconda--16 1/2"

Costco AFA--16 1/8"

I learned about the Kraus brand on here from others who recommended it. I have one Kraus single bowl sink and two Kraus pull down faucets. All have been great. Their package usually includes the bottom grid if you are concerned about scratches. Readily available on Amazon if time is of the essence.

Do you have access to Kohler vault? I think they are 18g

I missed when initially posting above that one of your sink choices has a corner drain. That is a wonderful feature, and IMHO, makes that sink superior to the other choices.

Also, adding to Ci_lantro’s advice about front-to-back sink measurement - make sure there is enough room behind the sink for full operation of your faucet. Some single-handle faucets need some inches behind them to turn the handle all the way. Some manufacturers, like Grohe, have faucets with the handle at fully-on with the handle pointing straight up, i.e. no additional inches behind the faucet needed. Some single-handle faucets allow you to face the handle to the front, which a number of people on this forum have done. An added advantage to that is that wet hands aren’t dripping all over the counter when turning the faucet on and off.

let me just comment on the gauge. unless you want it to sound like a huge, empty tin can, go w/the lowest gauge you can get. I wouldn't do anything over a 16gauge, personally, but that's me. I have a 14 gauge copper sink and love it.

Can you order from US Home Depot?
It might be a tight fit, but this is 16-Gauge, 304 stainless steel.

Whatever the gauge, make sure they have side and bottom insulation. This helps deaden the sound considerably.

Here is a good article from Home Depot.....http://community.homedepot.com/howto/DiscussionDetail/Tips-on-Selecting-a-New-Stainless-Steel-Sink-906500000000JFR

Beth is spot on about the gauge. Go with 16 Gauge.

"I’ve heard mixed reviews about Kohler sinks (surface rust?)."

Just about every stainless sink of any brand that's been discussed here, has been accused of rusting. But: stainless steel does NOT rust. New sinks sometimes have metal dust on the surface left over from machining which once it gets wet, creates rust spots. They easily scrub off, never to return. Also, if you use those metal scouring pads, they can leave residue that rusts. But again, this can be scrubbed off with a plastic scrubby.

We had our Kohler Stainless sink for about 3 years and never had an issue. I tore it out of our old house and am installing it in our new kitchen.

Here is an older post.....https://www.houzz.com/discussions/need-input-on-julien-sinks-16ga-vs18ga-dsvw-vd~2694906

I personally am not a fan of square inside corners as I think they are harder to clean. I like the more "classic" design of rounded inside edges.

we had same problem and got a Houzer Eston sink from HD. We've liked it