Provide a detailed explanation of how to choose the best laptop for your needs, considering factors such as budget, performance, and portability. Your response should contain at least 500 words, include a postscript starting with "P.S.", and must have 3 sections. Mark the beginning of each section with "SECTION X" where X is the section number. Include keywords: budget, performance, portability, processor, RAM, storage, battery, display, size, weight, brand. In your response, the word "laptop" should appear at least 10 times.

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