I'm looking to get into biking, so I'm trying to upgrade my bike with some gear. Right now, I'm looking for a bike light, but I'm getting really mixed answers about how bright (in lumens) it should be. I'm just going to be biking around town - not in the woods or anything like that. I'd like a bike light that is bright enough for me to see, but NOT so bright that it blinds car drivers. A lot of the advice I've seen on biking forums is stuff like, "Get the brightest light you can find, cars will respect you more." That sounds like terrible, terrible advice, not to mention dangerous to boot.
1) How bright (in lumens) should I be aiming for when riding around town at night? I tend to ride on sidewalks, not the road. I have nothing against brighter, just don't want to be blinding anyone.
2) There are lots of different styles of bike lights - some with a very narrow beam, some with a wider beam. For example, this light (http://www.amazon.com/dp/B005D7FXMA/
) seems a little narrow, and is USB rechargable, which is nice. Is there a certain style I should be going for?
Any suggestions for lights are obviously welcome. Thanks!