I'm Biased.

But then I tend to sell things that I believe in.
Voted for the Halcyon
IMO - just a few of the reasons
- The build quality is better. - noticable when you take them apart
- The bulbs are the same brightness underwater
- You have less flicker with the Halcyon
- The Dry Lid is a true Dry Lid design rather than double cable glands both of which may leak.
- Halcyons are ALL pressure tested (152m) before they leave the factory
regards
(pm for more details)