This Post by Matt Gemmell is perfect.  I especially like this statement-

Simplicity is a powerful thing, if you can find it. It can improve your creativity and focus, provide much-needed perspective, or allow you to declutter your workspace and your thoughts. It can also make you happier.

It often costs more, but I’ve found it to be the most worthwhile investment you can make. There’s nothing better for your work and your life than a quiet, focused mind.