Two, I have a NiteRider Omega 300 on the saddle bag loop, and a NiteRider Sentry Aero 269 on my helmet at night on.

What Koyote said is what I've done for quite a few years and said that on various forums. Canadian studies have shown that a flashing light attracts attention better than a solid light; but European studies said that with blinking lights motorists had difficulty ascertaining their distance from the light, so they outlawed flashing lights. Knowing that when I ride at night I run my brightest light which is the Omega 300 on solid but the Aero 260 is on alternating flash; but during the day I run the Omega on strobe.