1. Perhaps we should be talking about stupid theories instead of stupid comparisons.
2. A fish finder does not have the capability to save your life like a 406 epirb
3. A 406 is a 121.5 and 406 in the one unit
4. The 406 gives almost instant notification AND verification of a problem
5. New model batteries have increased life of around 7 years compared to the old 5 years
6. A 406 is actually designed to be tracked "properly" by satellite, a 121.5 was never designed to do this
7. A 121.5 cost around 230 odd dollars and yet some are complaining about the cost of a 406 at 360 to 400 $$
8. Yes you do need evidence to support your stupid misinformed statement