I just bought a Samsung 23" monitor that supports 1920x1080 and uses a dvi to vga cable I has plugged into my only thunderbolt/dvi output. I would ilke to get a second monitor that has a higher resolution. What are my options here for using a second monitor? I know I can daisy chain the Thunderbolt display but a cheaper option would be nice. Is that possible? How would I plug them in being that I already have used the 1 output I have? I don't think I want to use USB because it is slow. I'm only developing so no need for speed but I don't want any lag when moving the mouse, etc. My MBA is the latest gen. What are people out there doing for a two monitor output?