I've used StreamChartz since they started - it has continued to develop over time as an excellent tool that allows me to get great impressions with my ads at good prices (I tend to buy more impressions than CPC bid). Their customer support is fast & friendly. Pricing/cost structure isn't always ideal but they do offer discounts for large spenders so we work through this. But overall it's been easy to integrate into our existing workflow. StreamChartz is very easy to use - it's not complicated at all! You can upload your videos with ease (uploaded within minutes), add tags easily as well. Nothing that I dislike about this tool so far! It has been an excellent way of adding video content into our website without having to hire expensive consultants or spend hours in front of computers editing footage ourselves.