The main difference between Avid Media Composer and Avid Symphony is the advanced color correction and mastering tools found in Symphony. This tutorial explains the possibilities offered by these tools.
If you are interested in Symphony, now is a good time to buy it, as there is a discounted promotion (until June 15) to upgrade from Final Cut Pro, Avid Media Composer or Avid Xpress. You have all the information about this offer here.
In version 6 of Media Composer and Symphony, and in Newscutter 10, improvements were made to the Keyframe Editor, the tool that handles the use of keyframes. This tutorial shows the changes introduced in it, such as disabling keyframes or the possibilities to adjust parameters with the keyboard.