You can never have too much screen real estate. While I was a graduate student, back in 1997, I ordered a second video card for my PowerMac 9600. At the time, it was an expensive investment for me, but it allowed me to plug in both my 16” Sony Trinitron display, and the old 12” Apple display that I had left over from the LCII I had as a college freshman. It sounds like an insignificant thing now, but let me tell you, when working in Macromedia Director, the ability to put the score on the 16” and have the stage on the 12” was a big deal! Windows wasn’t even capable of extending its desktop to multiple monitors. From that point, there was no turning back. I eventually got a 17” Apple Studio Display and then a second. I used those two matching CRTs for years. Eventually, they wore out, and I replaced them with Apple’s 20” LCD Cinema Displays. I’ve been using them for many years now.
I got myself a 27” iMac for Christmas. It’s a beautiful thing. The display is absolutely gorgeous, and it’s enormous. And it just happens to have two Thunderbolt ports on the back. You might guess where this is going. I purchased two adapters, and I now have the two 20-inchers straddling the iMac. Perhaps it is a bit decadent, but I’m loving it. You can never have too much screen real estate.