I know this is a long shot, but I was wondering, seeing as there are so many relative unknowns out there.
At this time you can be happy when having a working video editor on elementary OS.
Kdenlive from the 14.04 Repo is very outdated and has some problems. The newer builds from the ppa rely on newer dependencies and don't work on 14.04. It is also not very intuitive.
Pitivi has still no stable build of the newer versions. But the UI looks really good. Maybe it is elementary HIG compliant?
You can install Openshot from the Ubuntu Repo. I haven't tested it but it seems to work.
Their PPA is outdated. They are working on the 2.0 release.
Cinelerra is really ugly and not intuitive at all! Maybe it works for some people. The version you can download from the website runs on freya.