I'm interested too.
I would definitely go for a remote capable model. I have the basic of basics... the one that you can't even take out of the case. That one is good for what it is, but I really hate editing shots where I put the camera out of reach and Let It Run. I really like not having the camera on my head, so the ability to remotely start and stop filming is key.
I also would like the ability to see what is in frame. There is no way, on the go pro I have, to see what it's filming. You just have to point it in the general direction and hope it is a good shot. Even with the session it is bluetooth capable and can be linked to your phone or a remote with a screen to get a visual etc.
Depending on your budget, there are a bunch of options now, you should decide whether you want the compactness of a little cube or to have the interface of all that the larger models give you.
Also I would look into exchangeable batteries if you are wanting to run it all day. Some models, the unit itself has to be recharged rather than just slipping in a fresh battery.
Like I said, I am interested in learning more too. I am not trying to give you any suggestions, but more sharing my experience with what I have been using and what you may want to avoid.
Sorry that I'm not really that much help.
