I added a Startrc balance lanyard to my controller, which I really like because it holds the controller level, but the way it mounts ruled out a lot of the various sun screens. I ended up getting the FTVtosky unit. It mounts securely, works well and neither addition interferes with the other. I don't use the factory case, so I don't know if either item will create a problem in fitting inside. With my aftermarket hard case, I needed to make very minor modifications to the cut out for the drone. I recommend bot items even though similar items may be found cheaper.