Replying to What should I film in?

I have a gopro hero 4 silver and I'm not sure what I should be filming in. I'm basically just going for the most professional look possible so my question is, what looks best? 1080 @60 wide?, super veiw?, 2.7k? I mean I have literally no idea what to do. Also I have a pretty decent dslr, should I do a lot of filming with that? (it's kind of a pain to bring on the hill especially considering the fact that all of my friends hate filming and I have to like beg them just to hold my gopro for a single run).
But what do you film in? What quality is to much or to little?
Any help is appreciated.
thanks