A new trend is that most people are making their own desktops. It takes less than an hour and you pick each part to your liking. There are sites that build it for you too using parts that you want (iBuypower/Sager/Cyberpowerpc). Pick the highest quality parts and it'll run well. It's a lot easier than you think and if there's an issue you can replace/troubleshoot instantly. Dell, HP, etc. use the cheapest parts they can find. Most of the power supplies aren't branded and are low quality. Motherboards tend to be proprietary as do their cases. That means if something goes wrong, you can only buy their brand replacement part.