I use high-speed imaging for fluid mechanics and ultrasound experiments (20-30k fps) at the University of Michigan. When I was trying to figure out how to get started, the manager, John, was extremely helpful and technically knowledgeable on cameras, lights, and lenses. We received a demonstration of the Photron Mini AX200 camera, which was excellent for our experiments and easy to work with. Would highly recommend this company based on my experience.