JSHint

What do you like best?

JSHint allows you to enforce coding styles in your project that all team members are supposed to abide by. It helps to show error messages that might not be caught until the your code is compiled. Generally JSLint improve overall productivity with a project team

What do you dislike?

It will show some error messages or warning that are unnecessary because they don't make your code fail. So you either have to ignore them of turn the offline which might require you to look at a documentation for turning off a specific error warning in JSHint

What problems are you solving with the product? What benefits have you realized?

JSHint improves overall code quality in a javascript project and help you avoid stupid bugs