I have a Contigo cup I like that was cheap at Asda, and I also have a cheap water bottle from B&M that leaks, and a stainless steel bottle that I've had for ages but I don't like the way it makes the water taste.
I think I'd like a Contigo bottle but there's so many to choose from! It's mainly for out and about, as I just drink out of glasses (how retro) at work.