I have used Pinnacle Studio for a long time with good results.

http://www.pinnaclesys.com/PublicSite/us/Products/studio/

I personally use Joyoshare Media Cutter. It is easy-to-use and all-in-one audio and video editing software on Windows and Mac. Not only can it cut and split any audio or video without quality loss but also be provided with various editing effects, like crop, rotate, flip, adjust, customize parameters, subtitle, background, watermark, and more.