Damn Canon people and their Cashback
Couldn't resist, put the 70-300 on ebay and bought this :
To be honest I wasn't satisfied with the 70-300's performances anymore, mostly because of my 17-40L, even if one can't compare their range, its autofocus was so much faster and more reliable
The 70-200 f4L IS got excellent reviews all over the internet, can't wait to test that beast
Unfortunately it's been raining a lot these days ...