I bought my 40d and 70-200L f/4L IS USM lens from Discount Digital Photgraphics
[
http://www.d-d-photographics.com.au]
At the time (1 month ago) they were the cheapest local supplier and they had stock.
A check of several local photo forums turned up only good things about them.
Their website is very clear on the status of guarantees and cash=back offers.
I decided what I wanted on Sunday and picked it up on Monday. They seemed to have plenty of stock of everything.
I could have perhaps bought cheaper from HK but that could have meant a weeks wait for delivery
and I'm a
'I want it NOW!' sort of person
BTW, the same items would have set me back $150 less than I paid if I bought them today.