I use homegrown actions to speed up my workflow and help with consistency when both my wife and I are working on editing the same sessions or events. I have tried actions from some of the big players at conferences and stuff, I really think almost all of them look way overprocessed. They seem to be aimed at rebels and kit lenses, and when you are starting with much higher levels of contrast and sharpness due to good lighting, good lenses, good bodies, ETC.....it seems like its overdone. But then again maybe I just am not happy with that look. I went back and ran them on some older work before we got the 5d and L lenses, and they seemed to look much better. Of course you can dial it back, easy too, but after a point making my own became easier. Then they are set up exactly how I want them, and always retain their playability.