Those Trek (or Expedition) lights have excellent color, much whiter than most other LED flashlights that use 5 mm LEDs. (Luxeons can outmatch them in color, output, and throw, of course.) They are a bit pricey for what you get, however. Fortunately, I've seen some online sites putting them on sale.
If you don't get a Trek light, I would recommend the Lightwave 2100.