Now that the winter darkness has arrived, my early morning rides require a lot more lumens than I have used previously. Occasionally I am on roads with no lights, so having sufficient strength in my Lumina 1000 makes all the difference. I can see far enough in front of me to avoid winter holes and ruts.
The only negatives (minor) are the weight of the light (obviously needed for batteries to give such a strong light) and what seems to be a long time for charging. Nonetheless, I would buy it again.
I use it for urban riding. It provides a broad beam. Because of the many functions from pressing one button it takes a little practice. Good customer service after dropping and breaking mounting channel. They quickly sent out a back case for easy replacement.