I use this software daily. It is MUCH better than FCP’s color correction in my opinion. I have the After Effect Only version so I do most of my color correction in AE now.
Having Photoshop style curves is great and I like having all the different scopes and controls all in one plugin. I’ll often use several tabs of correction to get one shot right.
All of that said, it’s not perfect: It’s not real time, you can only grade one frame at a time (as of version 1.5)
Not sure which version you downloaded, but they showed off Version 2 at NAB, so if that’s not out yet wait and get that. There are some big improvements. If you have any questions about it, go over to the Synthetic Ap forum here and post it. Very helpful and quick response.