-Easy to use -Fast downloads, including high quality (up to 4K) -Allows downloading of both video and audio only -Automated Youtube Playlist downloads -Automated loading of downloaded audio into iTunes -Downloads from many more sites than just Youtube -Allows for local file conversion of video to audio too This is by far the best YouTube downloading software I have used. The automation features (playlist downloads, audio loading into iTunes) alone put this software above the competitors. It is super easy to use, and the downloads are fast. The visual interface of this software allows you to monitor the status of your downloads and conversions with ease. I've experienced no issues with pop-ups, adware or other issues I've experienced in the past with other "free" YouTube Download software.