@jbowerbir Great question! Both are really solid options, but there are some differences that could cause you to love one more than the other.
It sounds like you are using this on a drop bar bike for now. One of the issues with handlebar rolls on drop bars is how they limit your ability to ride on the "tops" of the bar. Since they are strapped on and rely on the tension between the bar and harness, you are most often left not being able to fully grip the top of the bar. With that in mind, the EXP Anything does a nice job of moving the bag away from the "tops" freeing up space between the bar and allowing you to completely hold the bar.
Other than this design difference, both harnesses have solid features and reliable construction that you will be stoked on. Think about which mounting option appeals to you and have fun out there on the trail!