Hi there,
I am a computer technician for a fairly reputable company. I can confirm that you should not pick based on manufacturer name. ALL systems have issues, all brands have issues. I service Sony, Dell, Hp, Compaq, Samsung, Asus, Acer, Gateway, E-machine and MSI products. I see literally each brand come back. There really is no "better" brand based on sales figures. Also, support from manufactures is generally terrible, and sometimes, even hard to get at all. One thing to remember too, is a lot of the parts in any computer are not made by the same brand. Take Dell or Hp for example. They use Toshiba, Hitachi or Samsung hard drives typically. So when the hard drive fails, really, it's Toshiba, Hitachi or Samsung's fault, not Dell or HP's necessarily. And when people say "buy a mac, it'll last forever", tell them when it fails they have to buy you a new one. Yesterday I had an IMac come in for service, the hard drive was dead. Guess what I find when I open it up: A Toshiba hard drive, no different then other PC manufacturers. Apple may control their products better, but the parts are still sourced from Foxcon or a similar company the same as PC parts are.
If you can custom build your PC you'll be a lot better off. The parts are still mass produced, but on a much smaller scale then a "branded" PC would be. Also, then you can get exactly what you want, and not settle for "I want this feature, but this feature also comes with it...." that branded PC's have.
Hope it helps,
Sindaine