The ability to capture all errors in one place, instead of having it scattered throughout your code base makes debugging much easier! I like that you can easily set up filters so only certain types or categories show when an issue occurs - this helps keep things organized as well; there are also plenty other options available too (e-mailing yourself reports).
There's no integration with Github issues yet either which was something we were looking forward towards but looks great once implemented given how popular GitHub has become among devs these days ;-) Great product though if used correctly will help make development more efficient by reducing time spent tracking down bug fixes/errors etc.; not really any downsides at present aside from lack of github integrations support currently :-( Would be nice however since they're still fairly new around here their customer service could use some work :) We have been able solve many problems over our projects using CATCH JS including helping us find out where exactly users experience slowdowns during page load times through.