I use Final Cut Pro, Premiere, Photoshop, Pro Tools, Compressor, MPEG Streamclip, Safari…off the top of my head, and other than maybe PS and AE, I rarely have any of these running simultaneously. The majority of what I shoot is on a 5D and a 7D. I convert to and edit mostly in AIC, although understand Pro Res is more widely used so will experiment with that some. And a lot of my output is to YouTube h264, mpeg4, or mpeg2.
Thanks for your help, eager to know what the root of the hold up is, and the best ways to overcome them!