Once again I am in my office and my PC does not support Farsi Characters, forgive me on that.
To respond to Mr. Ghobadi, I shall say that you are wrong when you said Pentax has copied their shake reduction system off of Sony products, They both developed and manufactured them simultaneously, and in parallel processes. In Sony Alpha the shake reduction is effective on X-Y axis while in Pentax is effective on X-Y-Z axis, so you see that Pentax shake reduction is way more effective that two dimensional Sony's.
Anyways, I still strongly believe that "brand loyalty" is unwise and often childish, that is assocoiated with people with lake of confience in them selves seeking approval from others based on products and goods they carry around. I am sure there are vast spaces of this world wide web that are devoted to rambling of people about their things. Having been associated with "Land Rover Lover" sites and etc. does not justify the cause. There are few people in this world that love to compensate for their short comings, and incompetence with buying or using things that are well accepted in societies, and that alone does not make them good products.
Any who, if you like what you do, who am I to tell you otherwise, after all if the whole world gather to change one's mind they fail so long that person is in different realm. Whatever floats your boat.