I've tried OpenShot, Kdenlive, and Shotcut (not to be confused with OpenShot), and I have to say Shotcut is my favorite.
I haven't tried it but have had success with OpenShot. I don't remember why I picked it over Shotcut, but it did what I needed and never crashed; just was slightly lacking in features, like reorganizing the timeline - I think I couldn't multi-select components.