Thanks for your interest!
In response to your questions, the PT1000 is a great, lightweight teleprompter for run n gun shooting, but it does present a challenge in that the monitor is just above the lens and while the eyeline will be close, it will not be as exact as with the PT2000. We do not currently have footage comparing the two eyelines, but if you are needing for the eyeline to be perfectly lined up with the lens, then I would recommend going with the PT2000.
As for the inputs, the PT1000 does accept a VGA signal, however it is done so through a breakout cable, so it is not a standard connection, but rather one that looks ver similar to an S-Video connection.
As always, if you have any further questions, feel free to contact us! And thanks for swinging by the forums @ Ikan!