I feel obliged to write a review to help those who look for opinion on equipment. This forum was very helpful for my choices.
Regarding the lens: You can consider a thing ideal only while aware of its objective limitations and its purpose.
This lens is great for the purpose I bought it. My purpose is to make beautiful photos of my children with a glass capable to make portraits from the distance not distracting the children with my presence. They are in constant motion, so you need quite good light to capture them properly with 4.0 glass, unfortuantely IS will not be helpful. I actually considered 70-200/2.8 or 80-200/2.8, but they are too heavy to carry it around during a family trip.
pros: Colour, sharpness, zooming accuracy and speed are perfect. No pictures out of focus. After buying this lens only you will be guilty for the poor quality of your photos.
cons: needs good light for moving objects, not very usable in poor light,
as you see cons are determined by objective factors, so I do not complain about it, and rate the lens high