cyberzip
On a related note - doesn't the interface in X1 and X2 take more space than in previous versions, leaving less for your content?
Perhaps but you also have more control on what is displayed. If you had Sonar 8.xx with all its tool bars than it took up a lot of screen space and you had no easy way to get them out of the way. With screen sets and keys like C and D for viewing the control bar or the multidock or I for the track inspector B for browser and so on you have a lot of control with X1/X2.
You could have perhaps more tracks displayed in the older Sonar but the usefulness of that is doubtful in that each was too small to be of any practicable use.
Plus with X2 you have the ability to use the entire screen for the TV.
In the end its just a better way to do things.