Review by: skydvr240, 2013-08-27
Do any other AADs have the ability to be used in the Expert, Student or Tandem mode within the same unit? NO
Do any other AADs have a battery that tells you when it needs changing and can be done by any rigger? NO
Do any other AADs have a shelf life longer than 12 years? NO
I am only one person with a lot of experience with each. They all work as specified in the users manual and they all have had their issues through history. To claim that one is better than the other for basic function is for you to decide, but initial cost, required maintenance cost and longevity have easily moved me to the Vigil. I much prefer not sending my AAD back to the manufacturer every four years and it bugs me if I have to throw it away after 12 because it becomes useless.