I was wondering why some people prefer the IL over the Happ? In looking at the two it seems to me that the Happ would be the superior product. The black actuator that the Happ uses is both larger and stiffer than the IL actuator which gives you a more positive press on the switch than the IL which has a smaller and somewhat flexible actuator.
I believe that most that have an issue with the Happ joysticks circular feel. If you are using the a hole for the happ comp that you previously sized for an IL then the happ will not feel as good as the IL because the hole is largely suited to the IL’s increased throw. With the Happ you can decrease the throw by using a smaller hole and this is where you benefit by having a larger actuator.
A Happ comp is like doing the JLF Ultimate Mod to your IL joystick imo.