More info than you ever thought possible...
Personally, I have a Mag LED 3D in the car. Also a Streamlight Scorpion and a Surefire L4. It all depends on what you want, your budget, how long you're looking for batteries to last.
Fenix, and their clones, are decent bang for the buck, but for LED's only. You want an incandescent, Mag, Pelican or Streamlight are good brands.