which laptop shud i buy!!???

Well, I dunno in rupees... Many laptops are good, though BenQ rules in some laptops. Try to get one from Taiwan, since they are the leading computer suppliers :P It also depends what your using it for. The specs you provided gives you a good laptop, but if your going to use it for gaming, get a moderately new video card (prefarebly nVidia 7500 etc.)