Well, I pulled the ripcord on a high-resolution 2560x1440 display, an ASUS PB278Q 27" monitor. Only a minor increase in size from my previous 23" monitor, but I was hoping the extra resolution would be good.
My first impression when I fired up the Legacy at my default airport was "meh" - the view was moderately more expansive, but nothing earth shattering. However, after I started looking around, and noticed that the instruments were rock steady and dead clear, the airport fencing was totally crisp, and say, I don't remember that Lear parked next to me looking so sharp before, my impression turned to hmmmmm.
Took my first flight, and as the Internet meme goes, ermahgerd! The sense of "seeing" is phenomenal. You just see things, versus trying to make them out. Auto gen? Crisp and clear. Orbx vector lights? Awesome! Things way in the distance, they have texture (auto-gen popping is slightly worse, if anything, but it looks so damn good I don't seem to mind). And those aircraft 5 miles out that have the red labels - now I can see them! Couple of pixels wide, but I can still see them.
One of the best 500 bucks I have spent on my rig, by far (of course, the previous 500 bucks into a GTX 780 probably helped).
The only "blemish" as this point is that terrain can be blurry down low. But I think I can back off some of the SGSS settings in Nvidia Inspector and regain that.
And, oh by the way, AVSIM web pages look fabulous!