Not necessarily perfectly rectangular or square watches, but I consider cushion shapes etc to the category square as opposed to round watches.
The Bulgari (I realize I am one of not many that will say this) is in my humble opinion the least attractive one of all models displayed in this post and the replies.
I understand the design philosophy behind it you from 4 to 8 to round in 3 steps etc. But to me that makes the watch bit lost in the middle.
The Rado is a great one. An odd 30-35 years ago I had a boss who bought one of the first Rado: at that time (today still is) a big novelty.
It appeared indeed to be scratch resistant coz after a year I remember how it showed no scratches. Unfortunately it didn’t survive a 10 meter drop on a concrete ramp when he lost it.
The vintage Omega watches are a nice reminder of an era gone. It is difficult to find valid reason why the JLC rectangular watch is today a bigger icon than ever, while the Omega just disappeared. I for one wasn’t aware they had made them.
And my own favorite square or cushion shape: I would put my CARTIER at 3rd place, the VC Harmony at 2 (and you won’t belief how comfortable that watch wears) and in my collection there can only be one winner VC 1921 pt