In reply to Dell:
The Bodum one is the best I've found for keeping drinks hot, but it's not totally sealed so while it doesn't slosh everywhere, it'll still dribble if you knock it over.
The Camelbak Forge is awesome. Not quite as insulating as the Bodum but it can be inverted in your bag without leaking.
For the car, it's Bodum and everything else it's Camelbak.