I have used Sensoray's video capture and industrial control products in several projects, over a period of more than 15 years. They seem to support their products for longer than the industry norm, which is important to me because my products typically have lifetimes of 10 years or more. I've been satisifed with the quality and value of their hardware and software, although the documentation is somewhat sparse in some cases. Overall, though, they give excellent support and I've never encountered a problem that they failed to resolve to my satisfaction.