Hello: We have a recently opened dive shop and it seems we are need of more and better lights for our night dives. Of course budget is an issue, and when you add shipping, VAT and duties to Vietnam, which can easily double prices in the U.S.A. I am pretty much forced to buy from China. These two names seem to be the big players, offering warranties and very reasonable pricing. I have not been able to find any really complete reviews, please pardon me if they are here on this forum, I assure you I have looked, but with the internet on a remote island in the South China Sea, it takes about 5 minutes for a page to load, and I get ten time outs for every page that actually loads. Can anybody kindly point me in the direction of some reviews ? first hand experiences ? I am looking more towards the Ambitechs as they will ship here with batteries and chargers, where the Archons will require me to close my business for three to five days to go to Saigon to get batteries, if they are indeed available here, as it is I will have to fly to Saigon to get them out of customs ! Any help or advice would be gratefully appreciated. I simply cannot justify $75 bulb replacements and $150 ballast replacements for our Ist HID lights ($350 new here) and Mares wants $150 for a battery pack for their Phos HID lights ($500 new here) when they can find them. Then add taxes, duty, shippping, find the parts....I give up ! Time for new lights ! Those 1000 lumen lights ($75) for the customers and 1800 to 2000 lumen lights ($150) for the guides look very appealing for the price. My head simply has no room nor time to learn a whole new technology ! I could really use some advise from people who know something about this stuff ! Thanks very much. Larry