I'm a big headlamp guy now. Lanyards are all well and fine, but man a headlamp is great if the car breaks down and you want to take a look at the engine.

I've got a Petzl Tikka XP. Not waterproof per se, but fine in rain. Has a boost feature if you want to see farther on a temporary basis.

I hike a lot, and on a couple outings, I've done some extensive night hiking. Great light for such things.

Here's a site with multiple independent reviews: Bacpacker Gear Test