Replying to GoPro Questions

Hoping for quicker response here cause it's a pretty simple question


So I remember a while back people were saying that when you shot in 60 fps, it would only import half the click when you went to upload it.  Is this still a problem?  I havent bought one yet cause I figured theyd work some bugs out.
Are there any other known problems?

Also, I'll be using it for skiing and other everyday footage.  What is the best package to go with?  helmet and buy other mounts or a different on?  Basically just want to know which mounts you use most and are most useful to you.

thanks