Desktop, laptop and an iphone. BUT. The thing I use most is my Lightscribe Pulse pen. I'm an OCD note taker (I have an entire 12x12 wall full of notebooks),

Desktop, laptop and an iphone. BUT. The thing I use most is my Lightscribe Pulse pen. I'm an OCD note taker (I have an entire 12x12 wall full of notebooks), and I have shitty short term memory. Being able to record audio with my notes during meetings, cab rides, etc. has saved my ass countless times. More so than any other device I currently use.