Originally Posted by
rfomenko
Cateye Reflex is a joke for daytime riding and that's a fact. I wouldn't even ride with it at night in the city with lots of ambient light. Two AAA batteries and long run times make it a little better than a glorified fifty cent reflector for $20. LEDs evolved a LOT in the last five years and the old school blinkies do not cut it anymore.
As others have indicated, your statement about the Reflex being a joke (i.e., worthless!) comes across as an exaggeration, but you're entitled to your own opinion. By the way, this is now a $10 dollar light (non-auto version) on Amazon and the reviews speak for themselves. There are indeed much better lights out there and more coming out every year, but the the big trend seems to be about everything being USB rechargeable with self-contained batteries that are difficult or nearly impossible to replace on the road, no reflective material in case your batteries died, not as many light patterns and much shorter run times.
Having said this, your Serfas suggestion intrigues me. You seem to know a lot about both the Serfas and the Reflex rear lights. Have you had a chance to compare both the Serfas and the Reflex side by side taking into account the mentioned parameters in previous paragraph? That sort of feedback would be a lot more helpful rather than fully discrediting someone else's experience with a particular product.
Regardless of light brand/models, it is a good idea to use two rear lights - one flashing and one steady - flashing mode serves as a warning and the steady/constant mode helps drivers with depth perception as they approach you.