I have heard great things about video con. And, I love the IMSC conferences and will be there in November. They have a separate fee for 1 day of basic video, either the day before or the day after the IMSC conference, because it is not IMSC that actually does that training. Also, Dan offers a discount on video equipment bought AT the IMSC conference.
I am not sure that you will meet any more video MS schedulers at VideoCon than at IMSC, since all of the top ones go to both as far as I have heard.
My advice about VideoCon is to contact Jeff through that site and ask him about the need to have your own equipment for that training. He also does the training the day before/after the November IMSC conference, I think, so you might want to think about traveling to that one and save a lot on airfare, hotels and the trip from Denver to Colorado Springs, which is expensive, not matter how you do it.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.