I'm interested in buying an aluminum bumper for my iPhone 6. I'm concerned about how it will effect the signal both LTE and WIFI. These are the models I'm looking at. 1. Draco Ventare 6X Aluminum Bumper (Luxury Silver) http://www.dracodesign.com/draco-ventare-6x-aluminum-bumper-for-iphone-6-luxury-silver/ 2. Draco Ducati 6 Aluminum Bumper http://www.dracodesign.com/draco-ducati-6-aluminum-bumper-for-iphone-6-astro-silver/ 3. Draco Tigris Aluminum Bumper http://www.dracodesign.com/tigris-aluminum-bumper-for-iphone-6-astro-silver/ The first two model seem to have a polycarbonate insert top and bottom to help the signal. I'm not sure whether the Ventare is a polycarbonate insert. If anyone has one of these bumpers or has information about one or more of them please let me know how it does handling the phones signal strength.