I do use other programs, but I mostly deal with Cinema 4D, which is where i got my user name from(I use to post on a Cinema 4D board). Although the pen works in C4D, but with the jumpy/inaccurate cursor on the pro/pro2, it makes it hard. But still, the fact that I can 3d model on a device that small and portable is wonderful. I take my Surface everywhere I go. It saves me lots of time driving around. If someone needs something, I can do it wherever i'm at. In the past that would have been a 30 minute drive to the other side of Vegas, then 30 minutes back from my office. Sure a laptop would also work, but laptops are just big enough that they are not that portable. Even if you get a super portable laptop, it doesn't have the touchscreen or the digitizer. Add all those things up and you can't go wrong. (yeah, I realize that sentence might be messed up, but i'm in a rush here)