Well, i hadn't really been contemplating the halcyon lights until i went to that stealthdive site. Those are quite decent prices and IMO very worth it. Still fighting with the idea of the 18 watt light on the 4.5 ah canister. The claim is for 1 hour 45 minutes for the 18 watt which is fine i think (could just get 2 batteries and have the spare with you). I was concerned about potentially over driving the batteries then i saw the 50 watt hid on the halcyon site offered with the 4.5 ah battery for video so i dont think thats too much of an issue. Most of my dives are < 45 minutes so 2 on a battery charge would certainly be fine too i think.
decisions, decisions. The one thing i hate about diving is that there are too many toys and variants to buy.
As far as harming eyes, we are in a fairly creature free zone of the world unfortunately (relative to other parts of the world at least). I was on the hyde and markam in north carolina a month ago and realized how fun it was just to sit and stair at the living things for hours down there. Up here, there just isnt a whole lot to blind, so light it all up, i say.
steve