Hello everyone, I think it's my first message here!
I'm really disappointed because when I read the message I immediately thought "Now this EQ is the perfect tool". But it's not true!!!!
In fact all that papacucku describes would be very important to add to Quadcurve. This tool is excellent but it is very difficult to compare several Quadcurve on differents tracks, what is normally a basic mixing feature.
Recently I watched a learning video with a top engineer working with ProTools. I was proud because my SONAR has all the same features as PT. I found a few exceptions, especially the ability to listen the frequencies that you are about to cut. I didn't find a function doing this in QuadCurve. In PT there was a little "headphones" icon for each frequency and you just had to click to listen what you will cut. There is something like this in SONAR Vocal Strip, in the De-Esser part. Very useful.