I don't have any more problems with Dells than I do with any other manufacturer. The company I work for buys exclusively Dell equipment...laptops, desktops, servers. All are generally pretty good...and we're horrible about updating End of Life servers...so we usually keep things around way longer than they should. And they usually all work fine. There are always some that break more than others...but that's true of anything. If you have enough you're bound to have a few bad ones in there. We've had Micron, HP, IBM, Gateways.....Dell has been better than all of them so far.
And our tech support is pretty good...but we're also paying for an enterprise support agreement...so that helps. I've never called in to support as a home user...so I can't speak to that.