G"Day AussieBob,
I will throw a few other thoughts in here now we have a range of opinions. I have spoken to and dealt with almost all of the torch purveyors mentioned above, and found them to be ethical, honest, easy going and keen to be of service. The torch community is small in Australia and many know of each other. One thought which is not often mentioned here, is support, which is a two way street. I know many here will purchase at the lowest cost, even if it is only $6 saving on a $180 unit. What has to be thought of is if you continually buy from overseas, there will be no one in Aus to support you when you need it. I and many of the others offer overnight service to most state capitols of Australia, even Perth 3,000 kms away. I regularly ship Lumens Factory lamps overnight to Surefire owners who bought overseas and now desperately need a lamp. There is no way to do that from the US. I have done the same with 17670 batteries, all because the person is caught short. I am happy to help out and enjoy doing so, but if no one purchased from me, I wont be here next year to do so.
I am not saying people should just buy because a company is in Aus if it is $100 more expensive, I am just saying think about who you want to support you and how they will be able to support your purchase.
Ebay vendors are another kettle of fish all together, their rating system doesn't say what happens 6 months later with a problem, many change product categories regularly and aren't even committed to the flashlight or torch business. You usually only have an email address and they can choose to respond or not when you have a problem.
I am not saying don't buy from Ebay or OS, just consider the pricepoint and take pot luck on the $20 torch but put a moment into deciding where you should buy your $100 torch from.
Regards
Glen