The primary reason I have stayed with DAN over the years ace is that their policy does not include the exclusions on depths or gas choices. Other carriers have some really good offerings, but if you read the fine print closely you will see that a lot do include such exclusions, so read the fine print prior to making your final choice. If you have no interest in going beyond rec limits (either intentionally or accidentally) or ever adding helium to the mix, then just about all of the policies are a good buy.