Hi there, I'm Matt Sergei (do call me Matt) and can create a PowerPoint video like your #2 or #3 reference.
Because they are made with PowerPoint and relatively easy (though a lot of) small animations.
You'll of course receive the PowerPoint (Mac 2011 - Windows 2013 ready) file and converted video as well (1280x720 pixels, e.g. YouTube HQ).
I'd like to know more about the story/opinion/campaign to present where I also have few ideas and experience (especially the video needs to quickly invite a viewer in first 5-8 seconds to watch till the end).
I'm finishing work on two other tasks yet can discuss and start working from Monday, Oct 28th.
Best Regards,
Matt