When at my desk it is connected to 2 - 24" monitors. Usually on one monitor I keep my IDE open, generally Webstorm and on the other I have a terminal window with 4-5 tabs and email etc. I also keep a browser for testing open on the same monitor I have my IDE open on.
My second machine right now is a Toshiba 17" Windows 7 laptop with 16gb RAM, 256gb SSD, VS2013. I generally don't use it but do when I have to deal with a Windows project. I have been wanting to move this to a VM on my Mac but just haven't gotten to it.
My laptop is a 15" rMBP; everything is running Windows 8.1.
For School: 15" Retina MacBook Pro 2.6 GhZ i7, 16gb Ram, 512 SSD No monitor. Gaming mouse and keyboard.
15" Macbook Pro 16gb ram, i7 2.0 ghz + 21,5" Dell Monitor
Sublime, Terminal, Slack, Web browser and Music