Author here - There are many good points here. The purpose of my article was to give a different perspective from the default "buy whatever is cheapest" method that I believe most people follow. Obviously it would be an error to buy things that that aren't better for more money, but I believe this error is often better than the opposite error, buying twice. A good example: I'm writing this on a 10 year old laptop running 1900x1200. Thanks for the comments and feedback.