Not really sure. This will be my first experience with them. I have been thinking about it for a while and have been searching through this forum quite a bit. From what I gather, most people really like them and recommend them. Different people prefer different brands (Most recommend Wet Okle or Iggees), but what I have gathered, the more you pay the better you get. Some people did recommend the CoverKing and they are a little cheaper then the Wet Okle or Iggees, and with the sale, you saved another $160 so I went for it. I will update this thread when I get them, let you know how they worked out.