I'm going to start commuting to work on a regular basis and will have to leave well before sunrise in the winter. The majority of my ride is fairly well lit with street lamps, however there are a few miles that have no street lighting what-so-ever and also happen to have really crappy roads with potholes. I tried doing the ride with my little 80 lumen Knog blinder headlight and it didn't put out nearly enough light. I'm wondering what the minimum amount of lumens I should be looking at when shopping for a new light. I'd prefer to get a light that's fairly compact and can be recharged while at work. Also if it could be under $100 that would be great. I'm open to any suggestions either for specific lights or simply a minimum lumen amount.