When at home, I like a glass, except for at night, when I prefer a battle that I leave in the fridge, to cool (and the cap means no creepy crawlies can get in). Outdoors, it depends on the establishment. If it's high end, then a glass. If not then I get a bottle.
I recently moved just outside of the city here, and so have well water (which has a gross smell/taste). I use bottled water for drinking on the go, but use the gallon size jugs and a cup at home (saves on plastic and reusable).
hmm well, if it's already in a bottle - like bottled water or beer - then i'll drink it from the bottle. but i wouldn't / don't put things into a refillable bottle unless i'm hiking or biking, and even then it's like a gallon jug