Yep, GoPro do have excellent audio...It is even better since they removed the microphone input jack and used that extra room to install a second Mono microphone.
GoPro even make it into the top ten. Which is no mean feat. At that level the experts start nit picking about colour and other petty things.
At the time I got the Garmin, I had a few days before the auction end, so I did some research. The seller made the mistake of having the auction listing end at 6pm Sunday night...haha...people are eating dinner and doing family stuff...so my bid won...$200 for a $1200 camera !!
At the time, I looked at expert reviews on about 12 maybe 15 reputable sites like PC World, Choice etc. Overall the Garmin was ranked at number 2 and 3 with the majority count being 2. The GoPro made it to 7 and 9 with a couple not even listing the GoPro in the top ten even though they did mention the GoPro in their blurb.
I don't know. Maybe the GoPro is the best and the expert reviewers are wrong. Or maybe the GoPro is cheap enough for millions of back-packers around the world to afford which would make it simply popular...
Catch a fish, film it with your GoPro, post it up and let us take a look
itsaboat mate...Life is just a boat and then ya marry one !