>>3676462A camera is more than just image quality. The 40D is far, far better built than the 60D. 40D has similar build quality to the 5D series.
Plastic is okay, but won't be nearly as robust as the magnesium body.
Never mind that you have to consider the price difference. With that 100 euro you would save you can easily get a nice other lens with it.
>sigma 18-20 DC OS that comes with a 40d a good lens?I have no experience with this, but from reviews online it seems to be an okay lens, especially good for traveling. At least it is a nice lens to figure out what focal length you like using, which can inform you for your next lens purchase and enables you to try a lot of different kinds of photography.
If you want to do video, the 60D is a no brainer, but I personally have never, ever used video.
And it is exactly why I said here
>>3676455 to go for the 40D, and if not the 60D, because the 60D and D90 seem to be the same price, similar body quality, then the 60D will have higher IQ.