Moon X Power 300 front rechargeable light £38.65 & TCB cashback
http://www.merlincycles.com/bike-sh...able-lights/moon-x-power-300-front-light.html
I've had this light for 6 months now and also have Smart Lunar 25 & 35. They only get used in the daytime now as they are just not sufficient for riding unlit roads at night.
I'd say the XP 300 lights up the road to avoid the shocking amount of potholes AND in front up to about 40 metres which is plenty to keep up a good pace.
I use it on flashing in built up areas 80% of the time and the battery lasts ages. Low battery indicator when 30 mins left and I charge about once a fortnight. Easy to change modes even with gloves. Lights up signs up to 100 metres away so absolutely no sensible chance of SMIDSY.
2 people have given me abuse. One was a fat bint on a moped who took the effort to slow down and shout at me. Another flashed me although only one of his headlights were working. Idiots.
You can get Chinese lights that may be cheaper but generally they aren't USB rechargeable and the brackets are crap.
2 of these would be sufficient for off road with the added bonus of not having a bulky battery pack.
In summary I thoroughly recommend these!