Karran is wrong; either of those sinks will undermount into a 33" (thirty-three inch, no typo) sink base cabinet as long as the sink is strapped, not clipped, into place. Karran is giving outside cabinet dimensions; you are giving inside cabinet dimensions.

They are both quartz composite sinks, no matter what the verbiage says.

The 670 has a slightly rounded top inside edge which will allow a very nice slight positive reveal which I highly recommend for looks and function. The 340 has a sharp edge to make a tight adhesive hard seamed color matched joint between the flange and the laminate or solid surface bottom. Again, while not recommended, I'll bet a good fabricator could seam undermount that sink into an engineered stone or granite top.

It's a great look, couldn't be more sanitary and maintainence free, however, this is an acrylic sink, not quartz composite, which would be easier technically.

@Joseph Corlett, LLC Phew, happy to know I can do the 670 in my space.

Is using straps a standard? I haven't heard of this before but I'm no plumber lmao.

Can you recommend a faucet brand? Open ended question for sure but I'm going nuts researching Delta vs Kraus vs Moen vs Hansgrohe vs Grihe vs Kohler vs (you get the picture). If I get the 670 I'll need to be able to pull out the sprayer far enough due to the offset drain... I'm not sure if I need functions like touchless...though the water filtering feature that some have are definitely tempting. I have a decent budget but don't wish to spend 4 figures on a faucet...

Straps aren't standard unfortunately. There is too much "But we've always done it this way" in the granite fabrication and installation business. Insist your fabrictor use a Hercules Universal Sink Harness from BB Industries or a Sink Strap or two from GranQuartz please.

I'm partial to Delta faucets because they're easy to install. Just stick to any major brand and you'll be fine.