You think so? Perhaps they've changed recently, but many of the Dell laptops I've seen suffer from incredibly poor design. I've owned a Dell Inspiron 8200 (which I should never have bought...it was so cheap for me at the time through some sort of connection), and it's gone for two repairs (both of which were because of different internal power-related connections that loosened) and now one of the drive bays does not securely hold a drive or battery. My brother owns a newer Dell laptop, (a 5150 I think?), and I've never seen a louder laptop. The only fan vents are on the BOTTOM of the laptop, and the rubber pads do not raise the machine enough, so the air cannot easily circulate out, so the fans have to operate at extremely high rates to keep the CPU cool, creating noise. Additionally, his computer shipped with a faulty MiniPCI wireless card; it took far more phone calls and hours on hold before they actually acknowledged the problem and agreed to send a replacement than anything like that should ever have to require.
It will take a lot for me to ever buy a product from that company again.