Two vs. One Video Monitor

I have 2 monitors - used to use 3, and may well go back to a third.
 
My reference speakers are to the right and left of my midi controller, and each monitor is placed on top of one of the reference speakers, so that they face me at the same angle as the reference speakers, at a 45 degree angle and are about 2-3 feet from my noggin.  
 
If I pick up a third monitor, it too will be an HDTV, and will likely be a 50" or 55" HDTV, depending on what is on sale when I am ready to pick one up.  THAT one would sit directly in front of me, and would then become my main monitor, with Sonar's main screen on it (Track Pane, Inspector Pane, Browser Pane).
 
In my current 2-monitor setup, Sonar's main screen is on the larger monitor, and the other monitor displays the console view.
 
In my setup, I have no desk.  I have my keyboard rig sitting in front of me, and is two-tiered, with an 88-key midi controller on the bottom tier, and a 61-key midi controller on the upper tier.  My keyboard stand has a horizontal stablizer rod that keeps the two brackets that form the 2nd tier rigid and stop the upper tier from shaking.  I have a square metal side of a computer chassis running across the top of the lower midi controller, (there are no knobs or buttons or any display panel on the top center of that controller, and the back of that metal square panel sits on top of that cross-strut of the upper tier of the keyboard stand.  I use a little duct tape to secure the panel to the stand and the lower midi controller.  On the metal panel, I place my audio interface and a tube pre-amp, and I usually have my computer keyboard in my lap or can place it on top of the audio interface and tube pre-amp - since they are both flat on top.
 
Sorry about all the above typing - my setup is quite comfortable for me to reach and see everything, and even though the two display monitors have some space between them, most of my work during tracking is using the main display monitor, once I have levels set, and I generally only need to occasionally glance at the other display with the console view on it, until I am actually mixing and watching levels more closely or adding effects or working with ProChannel settings and such.
 
If I pick up a third monitor, it would become the main display, console view would remain on the display to my left, and I would likely use the display to the right for having plugins open or maybe have Notepad/Word/Excel open on that one, for creating notes for the project.  Anything really other than the main display and the console would be placed on that monitor.
 
By thew way, both of my displays sit just about perfectly at the right height for me, sitting on top of the reference speakers.
 
Bob Bone