@timothykinney: From Tim Mosedale, Everest summiteer:
1. Nalgene Lexan wide neck preferred – won’t burn your hands when it’s hot, easy to fill with hot water and won’t stick to your lips when cold. Platypusses (Platypae?) / Camelbacks are fine for trekking but are absolutely NO good for early starts on the mountain – the tubes freeze even with insulators. NOTE – Please DO NOT bring Sigg bottles. They are a nightmare to fill with hot water, they will invariably burn you if you use them as hotties in your sleeping bag, you’ll spill water everywhere when you try and fill from a pan of water when cooking on the mountain, they are prone to leaking if dropped or damaged and will stick to your lips when they are cold. Don’t say I didn’t warn you!!
Apparently, you and I have no common frame of reference. I speak from experience. Thank you, however, for the enlightening observation of the physical properties of water.
@Irk: The unknown metal bottles are Siggs, or knockoffs thereof. Some folks swear by ‘em…not me. Nalgene is the good stuff.