Javascript Unit Testing Coverage Report Generators

I've been wondering around internet for an hour or more and found 3 to 4 Javascript Unit Test Coverage tools and I am really confused which one to use and which one to not.

The Notable one's I found are

• JSCover
• Blanket JS
• Istambul
• Coveralls

I am working on an Angular based project where I am using ES6 which compiles into ES5 using Traceur and I am using RequireJS for Resource management.

I am using Bower for Package Management and Gulp for running my Tasks and using Jasmine & Karma for Unit Testing.

I need a detailed comparison, pros and cons of these 4 test coverage tools and how they are compatible with toolset I am using.