I have a 6 year old Dell laptop that still works just fine. Upgraded an even older desktop recently, so the laptop pretty much sits aside unless I'm traveling now, but still there when I need it!
I never had any customer support issues, but that's because I never called them
. I'm also willing to do my research and tear stuff apart (literally and digitally) to fix it too, so that has helped me out quite a bit.
My brother got a new Toshiba to take to college with him last year, and my parents recently got one as well. Both have worked well for them and had no issues (or they would have called me I'm sure!). As was said, internally the components are pretty darn comparable from one brand to the next, so most of the preference comes down to support.
My desktop is a custom made beast with no support, so here's hoping I never have an issue with it that I can't handle!