Well, I went with the corded DR LED500 from caveadventurers, hard to go past that price
Did three night dives on the USAT Liberty in Tulamben - awesome dive site!
But, I had a problem with the light, chewed the batteries in a little over an hour, by the end of the second 50 minute dive it was barely putting out any light. Changed to a new set of duracell alkaline batteries, same thing. No drama, just switched to my backup
Contacted CA, who in turn contacted DR. Apprently they've had some problems with hungry modules. I'm returning it, they're going to upgrade it to the 700 lumen module for $90 (usually $150) to make up for the postage/inconvenience
Sounds pretty fair to me
The performance of the light - when it was working properly - was pretty good, although as has been commented by other posters, it has a wider angle than an equivalent HID light and therefore doesn't 'cut' through lower viz water as well
But overall I'm happy with it, especially for the price - good travel light, or if I get a 'proper' can light later, I'll de-cord it and use it as a backup