looking for a good light for ex1 that will be using stedicam pilot - have not decided on which battery version to get yet [vlock...AB ...AA] yet but would like some recommendations on light that can be powered from pilot battery

How bright a light do you want ?
I just bought the swit s-2000 light which runs from D-tap, i also bought the swit EX1 battery for my EX1, this battery has D-tap.

Ther light is easily good enough for lighting a wedding reception disco, the light is bang on 5600k and 3200k with the built in filter.
The light is quite small and weighs hardly anything, which is important i suppose for flying.

Paul.