Bottle cages for sure. I wouldn't use a camelback because sweaty. Most cages are all the same size and all bottles fit because larger ones are taller not wider. As for the best? That's open to opinion and taste and appreciation of aesthetics. Some people spend $50 on a carbon fiber cage that's aero looking. Some spend $4 on a traditionally shaped aluminum one. And some people go in the middle.
I bought the Delta Inox cages on amazon. They are different from standard cages but not weird looking and they look awesome on my Cross Check.

pic: https://www.flickr.com/photos/rattle...n/photostream/