I've had great experiences with both Ruby and Go. Both are a joy to write, and can handle most use cases. When I'm writing Ruby I sometimes wish I had Go's type system and lightning fast test suites. When I'm writing Go, I sometimes wish there were more conventions so I didn't burn so much time thinking through the absolute perfect way to architect every little thing. Still, they're both wonderful languages that hopefully fade to the background of your consciousness so you can focus on the actual business goals at hand.