Regular commuter tires of choice:

Schwalbe Marathon 26 x 1.5, 27 x 1-1/4: Fantastic flat protection, I like the road feel of them. Slightly heavy. I have the 27" tires on an old Burley Tandem and they are excellent even two-up.

Panaracer T-Serv 26 x 1.5: Best road feel, light; compared to other tires, not as good in the flat protection realm and my experience is sucky sidewall protection.

Panaracer RiBMo 26 x 1.5: Just right -- not as heavy as Marathon, better protection than T-Serv


Outliers:

Schwalbe Big Apple 26 x 2.35: Not the best flat protection, surprisingly light for so big a tire, fantastic balloon tire performance.

Maxxis Hookworn 26 x 2.5: Indestructo tires. One tire weighs as much as a lightweight wheelset. Super fun.