The rear light is fantastic. Very bright. I feel confident that drivers see me while riding at night. One issue I have is that the rear bracket comes loose with time and requires constant tightening (otherwise the light will flop downwards).
The front light is adequate, I wish they had bundled the 1 watt light with it instead (I would willingly pay more for that 0.5w upgrade..everything thing counts out there). I had a taxi come head on with me last night on my side of the road and it was quite apparent he did not see me.
I would've rated higher however, one thing I have found is that the lights fail easily. I have had two tail lights and one headlight die on me (in half a year, not battery related). The problem seems to be in extremely wet weather (common on the left coast), the lights' on/off switch fails. Either it jams 'on', or stops working all together.
However, overall they are decent value.