How many are using screen sets? It one of the new features I picked up on right away. 
I just use the defaults 1-2-and 5. Each gives you a different view, 5 is the Console view for example.  
2 has the synth rack etc. So I mostly work in # 1 but will switch to #2 when I want to insert a synth and to #5 for mixing. There are other ways to navigate but screen sets work great for me. 
They seem to be kept with each project and you can customize and save them but I've yet to bother. The defaults are fine by me. 

John, just to be clear...you are saying that during tracking, the user should only adjust the input device or interface for levels and NOT Sonar, but the user should watch Sonar meters for individual tracks for accurate levels, which from prior posts, I gleaned, should be around -6dB. And of course keep in mind that the interface should at no time go in the red on it's meters.
 
When I track in Sonar 7PE (been awhile) I think I remember the wave forms being drawn in real time...is this what you are speaking to with regards to Confidence Recording.
 
I hope to soon be tracking in X3PE, should I expect the same real time wave form drawing, or is there something I should be aware of in terms of selecting a view or something?
 
Thanks John.