Jack of all trades, desert island, only revolver for the rest of your life?

What is your “you can only keep one” revolver, if every other gun had to go? You can buy a replacement for it if it breaks or repair it, but the make/model/caliber is the only one you can own/carry forever.

Interested to hear thoughts.

I’d just flip a coin between a 3” GP100 and a 3” Model 13.