I bought some fat Marathon Supremes for my mountain bike-turned-commuter. (700c x 40) and I love them.
I did manage to get a puncture but this would have flattened nearly anything.

My best guess is that I flipped it up with my front tire and the rear caught it just right.

The old rusty nail was about 1.5 inches (38mm) long

It went in the tread and out the sidewall and totally shredded the tube.
To top it all off this was on my way home from work on my first ever ride on the tires.

Compared to some of the tires I was looking at for my mountain bike (Schwalbe Big Apples) these were considered light.

Now I only hope I can fit them on my vintage ride-turned-commuter.

Lots of volume for a smooth ride and smooth tread for easy rolling.

Depending one where you get them they can be pricey but these get my vote.