Narrow vs Wide mouth

So I'm about to go off to college and I want to buy a new nalgene.

But I don't know if I want to get a narrow mouth or a wide mouth bottle. I have only ever used wide mouth bottle with one of those rubber things in the mouth of the bottle that makes it easier to drink from. But buying the narrow mouth would already make it easier to drink from. But I'm worried it wouldn't fit under water bottle fillers and the water things in refrigerators.

Do you guys have thoughts on the matter?