I went with the two button from Fujitsu Amazon.com : Fujitsu Digitizer Pen (1 replacement Stylus) T5000 : Handheld And Pda Styli : Electronics The Pen for the Surface Pro series should work as well, it's about 30$ from Microsoft store, even cheaper if you're a student. Buy Surface Pen - Microsoft Store Then there's the good ol' Wacom TabletPC Penabled stylus Amazon.com : Penabled Tablet Pc Eraser Pen : Tablet Computers : Electronics Those are all around the 30$ mark, give or take a few dollars. I like the Fujitsu because of the two buttons, but the Surface Pen is pretty nice too imo (changing nibs though requires some filing down from what I understand). The thing about the Surface Pen is it has a clip on it so you can clip it to pockets. Problem with the clip though is that it can become bent out and it vibrates like a tuning fork when this happens which is kinda annoying. Another thing is the button protrudes because that's how it's suppose to magnetize to the Surface Pro, so pen loops with this get more cumbersome, but I haven't had problems yet. You might see Galaxy Note pens or Lenovo pens that are cheaper on Amazon, but be wary. If you read some of their reviews, these actually might be knock offs because there's a couple reviewers out there that state some of those are not pressure sensitive.