I understand my requirements before I buy a computer, so I don't change my mind and return it after buying it.
I will say, to be fair, that there are indeed times that understanding requirements alone doesn't suffice. More and more I'm finding some in-depth research into speed tests, throttling issues, etc., is needed, and they're not always addressed even by what I'd normally consider decent reviews.
For example - previous laptop was a Lenovo T480S. Had a Core i5, 16Gb RAM, 512Gb SSD. I *really* wanted the Core i7.
However, after doing more than a normal amount of research...I discovered a website (notebookcheck.com) that had run speed tests, and it turns out that while the Core i5 ran at a constant decent speed, the Core i7 was a speed demon - UNTIL it ran into heat and therefore throttling issues that dropped its overall speed BELOW that of the Core i5. So as luck would have it, while being ignorant of the results when I bought it, by accident I'd made the right choice.
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