[jerryRiggin]

Personally, we've sailed all over FL and the BAhamas using Navionics charts. They have been great because they 1. allow you to update them every day if you want (and they have an average of 1000 updates a week!)

and 2. you can submit changes to the maps if you want (called Community Edits).
They even have a version you can run on your computer in Windows8!