About to go into my 17th winter of commuting on a old railtrack, an hour each way. Dont forget your back lights! They will save your life more than the front! Thats another discussion.
Hope R2i LED is proving great, I can get 4 rides out of it and know where Iam charge wise.
The big issue is the quality of the mount, it has a sprung element to it, so can take vibration, knocks etc etc. The ali one is as strong as it gets; the plastic one is no good. Also its a twist and the light is demounted.
Finally, service is excellent and resale value holds well. Also it wont burn your house down.