Man thats a tough one. I guess this year i could reduce it down to these 5:
HDS Clicky XP-L 6200K (Nice, programmable cool white light)
HDS Clicky XP-L 3900K (Nice programmable warm white light)
Surefire C3 w/ Malkoff M91B (Versatile, can run on 2x17500, CR123, or 2AA in an emergency, just a...