Sometimes the best discs are the classics like the former distance record holder, the Innova Valkyrie. Factory Second discs are discounted because they have minor blemishes or multiple stamps. They perform the same as stock discs.
More on F2's:
A Factory Second disc has cosmetic imperfections which do not affect flight or durability. These discs may contain bubbles or flecks in the plastic, other cosmetic imperfections, and/or multiple stamps. Stamp size, design, color, placement, and number of stamps on each factory second disc may vary widely.
Color preferences will only be fulfilled when available on a first come, first served basis.