We use several different ones. It depends on what platform you're running and how much you want to spend. Sometimes (to a degree) you get what you pay for. Just be warned some of the stronger more robust programs have the best features/abilities but they can come with a VERY steep learning curve.
I've been using Filmora by Wondershare. $29 bucks. Its like the Syma X8 of editing programs. I couldn't get to first base with moviemaker. First I had to sign all my rights away and be loaded with who knows what and then when I tried to load in a 10 minute flight in 1080p it took 45 minutes. Filmora takes a while to export the finished product but the input clips load quickly.
I use coral video studio x9 . It cost money but got for free on torrent site. It has tons of options but it does have the learning curve like others have mentioned. I can send you the program if you would like to try it out. The might also have a trial for it also.