Well, trying to pick just one of something,, is like trying to pick a favorite child. Each one is unique & different. And as they grow into adults, each one can choose a life path that is totally different from a sibling. Yet all can be very productive & do good things.
Same with guns. Each one has different purposes,, and can perform specific tasks.
Trying to pick just one,, ain't gonna happen.
If I could only have one Ruger I would choose it based on it’s history aspect, not as a shooter. And that choice would be a Ruger Pistol from the “first production run” October 1949. These pistols were the start of the Ruger Dynasty and lead to everything that is Ruger today. They are my all-time favorite Ruger.
I have some beautiful Rugers customized by several of America’s best ‘smiths. But, if I had to pick just one out of my safe, it would be the plain Jane 1967 Single-Six my dad gave me new when I was 13 years old. That one holds a special place in my heart.