For important work, use the most effective stack you've used in similar situations. For side work or single-use tasks, use something new that you want to know a

For important work, use the most effective stack you've used in similar situations. For side work or single-use tasks, use something new that you want to know about. As you gain experience with new things, they become the next main thing. The other thing is it hardly matters what you use vs how you use it. I've used everything from PHP to Scala and I can't say 100% which is better, both had pros/cons.