Whilst not a patch on the lights advised above, I have just bought a Lidl front lamp. It has a 3 watt LED, and although I haven't seen it in the dark it certainly looks OK shined across the kitchen in daylight. I have a Smart Polaris lamp and it is dim in comparison. At only £8:99 it will do me a turn for occasional night rides.
Edit) Just to make very clear, it is the Polaris that is dim in comparison to the Lidl lamp.