I like Synthesia for its fast creation and fast revisions of training videos, which is great as our product evolves quickly. I appreciate the ability to create scripts and seamlessly sync the timing to a screen capture. It helps when creating software training by capturing extended screen captures of our product. By creating the script ahead of time, Synthesia plays back the audio, prompting the 'driver' on what to click on and when, resulting in perfectly timed audio and product interaction.
Very quick to go from nothing to a full flegged high qaulity video, easy to use video editor and great export functions too. This tool has saved us alot of $ over the 3+ years we have had it and allowed us as a company to provide videos to our customers at high quality/low time to build.