I carry only a few key ones that I use 90% of the time, and a few decent backup discs just in case...
Drivers:
Blizzard Katana (my #1 distance driver)
Champion Wraith
Champion Leopard
1st run Tee-Bird
Mids:
DX Gator
DX Hydra
Putters:
Roc (also doubles as a midrange sometimes)
Aviar
Birdie