I have 2 of these bottle for my 6 bucks. The craddle fits my cage with smaller bar spacing better than my cage with slightly wider spacing and holds the bottle more securely.
The bottle and spout design means the bottle lays flat against the cage. The spout can be twisted round (rather stiff at first)so you can fit the bottle to the inside or the outside of the cage.
The spouts rarely drip if only water is in the bottle and only really drips if I've not filled the bottle right to the top. If I've added suppliments to my boys water then the spout does drip a little more frequently but it's not as bad as plastic bottles.
I'm hoping to purchase another of these bottles in the near future.