You'll probably find the watches are very similar, if not the same. The difference is in the operation and service offered by Jay (Silix) and Trusty (Andrew). One clue to the differences between the two can be seen from the websites, however, it doesn't mean that the watches offered by Silix are of a lesser quality. Andrew is much quicker at responding to emails where Jay sometimes takes a little longer. You pays yer money and yer takes yer choice... I've had watches from both Silix and Jay and prefer to pay less, even if I have to wait a little longer for my watch to arrive...