I like 21 better, but it is too traditional. perhaps the colors can be more bold and perhaps it can start to take on a 3D appearance. The word Re:Vision is too much in the background.
#36 is better. I like the bolder look. Perhaps you could look at making the stars 3 dimensional. What if the stars turned into an arrow (like rewind, or revision, or another change) - 3D stars turn into 3D arrow and wrap around text.