The past few years I've coded on a laptop, but I got tired of the small screen.

I recently built myself a desktop with 3 monitors: 2x 19" for Left and Right screens and 1x 21" wide screen as a center monitor. I have the center monitor on a Ergotron arm, so I can rotate it. In portait mode, I can have 19 vertical inches code in front of me. It's a joy.

I'll never go back to a laptop for my primary dev machine. I'm so much more productive with my monitors.