Suggestions:
AIR 235 discs for normal chewers
XTRA 235 discs for advanced chewers
AERO's for major chewers

Suggestions:
Competition Standard discs for normal chewers
JAWZ discs for advanced chewers

Suggestions:
Wham-O Frisbee® Brand Fastback
Flex Dog Discs
Chomper Dog Discs for advanced chewers