Fantastic! I've been trying out PyCharm and really loving it. I'm used to programming in nice cozy Windows IDEs, so this is making picking up Python a lot easier for me than using vi or Sublime.
The big thing for me is stuff like good code completion. I import a library and can just type "objectname." and then it tells me all the properties and methods of the object. I don't know if there are any plugins for Vim to make that work, but in Pycharm it works very well straight out of the box.