The past year I started collecting multiples of my drivers. I already had several typed of my challengers for putting practice. Once I started throwing the avenger, I began buying various plastics and weights. I have 6 and my only carry about 3 or so at a time depending on the course. Basically I like the feel of the disc and the ability to achieve various lines with one type of disc in various weights an plastics.
As stated earlier.....just test diff weights and plastics of discs you throw the most. If you don't like them, sell them on the marketplace.