The Aviar Putt & Approach is the number one putter in disc golf. Having won more World Championships than all other putters combined. Aviar is our most popular disc. DX Glow in the Dark. These discs are affordably priced and provide an excellent grip in a variety of weather situations. DX discs wear in with usage and over time will eventually take on new and varied flight characteristics. Many top pros carry several DX discs of their favorite models to provide different flight patterns for different situations.