I was considering adding another set of flaks to my collection for just shooting. I was checking out SI as I figured just a standard frame with some bip. I then saw there listing for Prism lenses. 99.00 or I could get a set listed as "with array" for 150.00. Does this array set include 2-3 sets of lenses? They have a drop down menu with about 7 different colors. SI states they are shooting specific lenses and show targets in an outdoor environment. So my questions are: 1.Are the prism lenses worth the investment over their standard counterparts? 2. Are they designed for both indoor and outdoor? 3. What comes in the array set for 150.00?