As in many multiple-choice questions, there is no right answer. My best answer is. Don't chose any single source of advice and do your own homework.
What source do you trust most for your computer-buying decisions?
Sales rep in a store (tell us more)
User reviews (tell us more)
Trade publications, magazines, and so on (tell us more)
Family/friend recommendations (tell us more)
Divine inspiration/gut feeling (tell us more)
Other (what is it?)