I use something very similar to a Varizoom. I use a Manfrotto 523pro remote handle on my cameras. To say that a remote control handle like a Varizoom makes it easier to film is an understatement!

I could not imagine ever going back to using the camera controls again. I have played with Varizoom handles on Canon cameras, and they work extremely well.

It is next to impossible to get TV quality footage while filming yourself, but you will get much better results with a Varizoom.