In no particular order:
1. Todd KD0TLS at http://kd0tls.blogspot.com/.
Todd is a regular here and proved to be a valuable contributor to this blog. His own blog however shouldn’t be overlooked. One of his last articles about a wide-band Sirio UHF antenna caught my attention. Nice for experiments, SWR extremely low over a large frequency range, can handle 300 Watts, and is stealthy too.