For your rear light use a Planet Bike Superflash. It's one of the best deals in cycling. An amazing light for about $20.

For front I like the old Light and Motion Vega that looks like this http://www.cyclingnews.com/tech.php?...nd_motion_vega. I own two.

I don't know much about the new one. I like this model because it's rechargeable and doesn't require you to mount a battery pack. I don't like mounted battery packs because you have to remove them when you get to your destination. With the Vega, you just slide the light off and stick it in your pocket.