Good day....finally after all day on the water, testing a new sail rig, for my upcoming kayak trip....I was able to sit down with the long 48 page Aleph-FAQ, print out...and read, and re-read the data... WONDERFUL job of putting a ton of data, in just 48 pages... short pages!!! amazing how the quality of data, makes 48 pages a short read. Considering the needs of this trip, I am still leaning toward the turn key, package, Aleph3,DB917,2x123,McE2S 60 ohm, with another Aleph 2 head...seeing that the 2 hour run time, and close to 5000 lux would be enough to I.D. landing points, or, things that go bump in the night, maybe this is against the grain, for this forum, but I like the darkness on these trips, and try to keep the use of light to the least as possible, keeping my night eyes sharp. I have had a few exchanges with Wayne, at the Shopp, and said, I would order from him, when I knew enough to ask a few questions...so, I must follow threw with my word. I do plan on owning more then one of these wonders, and will be contacting both Chop, and Darell, to rewiew their special skills with these lights, something along the lines of a 1x123 pocket model, Chop and Darell, I appreciate the help !!! Darell, your help, has already given you a invite to any trip !!! And to the wizardly A.K.A. McGizmo... this trip, will be the second leg, of a complete Kodiak Island Alaska to Vancouver British Columbia, via a sleak 19 foot kevlar Australian designed expedition/race sea kayak, and my own designed expedition 22 foot African mahogany sea kayak... both equiped with my custom sail rig. This leg will be from Prince of Wales Islands Alaska, to Vancouver B.C. normally 600 miles would require 15 days@ 40 miles per day....but with sail, we should cut days off this time, and allow for "side adventures" To all who have posted...my thanks, and appreciation for your greetings, direction and assistance... it is rare to find, such bright people, with such great personal, old school nature. Please bear with me, on my uphill learning curve.... I will have more questions.