I currently have 2 lights, NiteRider 250 and 500, both have a really irritating strobe pattern (just blinks around 1x per second I believe) and many pedestrians have negatively commented. Looking forward while riding can make you feel a bit dizzy or "crazy" at times! My Cyglolite Pace 150 was a lot better, it pulsed 3x then rested, 3x then rested, it was so much easier on the eyes.

Next light I'll look at the strobe feature more because I'd like to use it more during the day or when dusky, but don't because it's just really annoying.

However, the NR500 has a nice feature, a "walking" mode, where it's less bright than low, I like that as it extends the time range while still giving me visibility on lit paths at night where I really don't need the light so much to see but others can see me.