I was a Canon user up until January of this year when I defected to Nikon. The reason for this is simply down to product failure, in the space of two months the grip on my 40D has decided to strip the thread on the wheel of the grip itself which rendered it useless as it could not be removed from the body nor tightened up again.....
. Then just weeks later and only two months out of it's 12 month warranty my lens decided to show errors on the body on anything under f5.6. No fix by Canon there.
They did fix the grip problem though, after leaving me with the use of my old body for 5 weeks.....
Now don't get me wrong, I was extremely happy with the images that I got from my 40D and to be honest it took me some time to get to grips (no pun) with the Nikon. As far as image quality is concerned, both camps are capable of really top-notch photographs.
Nikon do have a 2year warranty, which if Canon had the same would have meant a free repair on the lens! Think about that before you spend your hard earned.....
