Q: Best screen share app for ipad?

I know Im late to answering this by almost a year but zoom.us has now done this. You can mirror iOS devices with video conferencing and screen sharing and it's free. Just thought I would share as the technology may not have been available back then.

I've been using join.me's built in sharing and whiteboard options. Seems very good and doesn't require a computer. For the video conferencing piece I invite my own phone as one of the attendees; I do my own video from the phone, propped on something, and I don't have to be concerned about where the iPad's camera is pointing. Works well!