The Tag Heuer Carrera at Amazon has the Calibre 1887 movement as discussed above. Tthe B+M probably have an ETA or similar movement. They reason they are cheaper is probably to do with marketing. B+M don't use L deCaprio and other stars to sell their watches. There may be differences in the quality but you would have to look at each to see how much. Amazon will probably not ship to Aust so you would need to use a US buying service to get the watch for you. There is a likelyhood that you get hit for GST. I believe that Authentic watches are reputable if you want to buy OS. If you want to buy in Aust then aim to beat down the price by 25-30% off RRP. Edit: the B+M has an ETA 7750: http://www.authenticwatches.com/baum...ives-8692.html