Since almost 50% of riding time I have here in Estonia is in dark, I need plenty of light. I am now quite pleased with my setup, but it's still not good enough for fast riding (actually not a big issue since 90% I ride technical narrow forest trails). I have two bicycle 2xLED lamps (from aliexpress) on my helmet, two SW-Motech Hawk motorcycle LED's fixed to handlebar and I changed the original headlight bulb to H4 LED from Aliexpress.
I raced at local "Nigh Vision" race last year and it was very good setup for that:
https://www.youtube.com/watch?v=NqJJZFZuziQ