shutter activated focus light

i have a sea and sea dx 350 and i am in the market for a focus light, has anyone used or have any recommendations. i was thinking about the shutter activated focus light. many thanks

See this thread, the review that mentioned covered most of the lights, read also the comments, there is another not so expensive option that mentioned there.

i was looking at the shutter activated light as i think it would be a lot easier to control from the housing itself rather than switching the focus light on and off from the light itself. juat a small press on the shutter and the subject would be lit. not too concerned with the cost, i have had a good quote from japan for £105 GBP..