I don't choose entirely based on stars, but I'll take a look at the one with more stars first.

An example is https://github.com/indexzero/node-portfinder vs https://github.com/sindresorhus/get-port

I have very little interest in most of the differences in features, and the cost of switching is low in the future. So I'll just go with node-portfinder because it has more stars. ( I also notice the forks count is higher)