I have a GoPro and I find I don't use it enough to justify what I spent on it (batteries die so damn quick). Additionally, I use my GP in the Jeep, so the weatherproofness (r) of it really doesn't matter, in my case based on my current usage. There was a weather resistant Samsung unit, similar in size to a modern phone that I probably should have gotten for <$90.
My guidance...buy a cheap one locally so you can return it easily if it messes up in the first few months of ownership.