I got a Dell about 18 months ago and I found their support to be rather poor.
Story:
The new Dell would not connect to my DSL. Dell blamed it on ISP, ISP blamed it on Dell, stating that the NIC card was not compatible with the motherboard/processor. We went back and forth for 8 hours most of the time on hold waiting for Dell. I finally got a Dell tech who found a technical note that confirmed the incompatibility. Unfortunately, I had to call their customer service to get it resolved. They denied this tech note existed and that they had made 100s of computers with this configuration. They said I could send the computer back and get my money back.
As I trade, I did not want another lost week mailing computers and waiting and wondering if the next one would work. So I took the computer to my local computer shop, and they fixed it on the spot and did not charge me as the NIC they put in cost less than the one that came with the computer and they kept it as payment.
They also told me that Dell is a wonderful source of revenue for them. Also, they showed me that the video card needed a fan as the way Dell made it, the video card ran too hot. I watched a test, and it showed the computer ran about 15% faster with the fan. So I had them put in the fan for $10.
Bottom line, no more Dell. I'll go back to buying from the local computer stores as I had for my previous computers.
DS