Thanks for all of your replies - I have heard that the NAV function is
fairly useless.

I hope to never be in a situation where my sectional reading, dead
reckoning, situational awareness AND gps go out on me!

In Jonathan Sorger
wrote:
This new pilot was rather freaked out after losing one of my two
radios on my first 'real' long trip. Making me an even firmer
believer in redundancy, it is time to get a handheld backup.

I was all set on the Icom A5 Sport (alkaline battery) as this would be
used as a backup. Now I see the A6 Sport has arrived.

Can anyone familiar with these models recommend if the A6 is worth the
extra $40 or so? It's hard for me (an inexperienced handheld user) to
spot the differences online.

Thanks,