We use the Comber CM-LBPS 1800. I researched a bunch of lights (to say the least) and this one by far gave the best overall light quality and intensity. It's heavy duty. The small battery gives you about an hour of use and the larger battery gives about 3 hours. It can also run from an A/C adapter.
It has a dimmer function, switchable color temperatures and LED lights. We use it on our HVX-200's that are used everyday for the news, so they get a "workout." We also use it as a hair light on our production shoots.