Full disclosure: I have always been a Dell denier. Having supported a number of friends and family, it always seemed to be Dell and Acer laptops that I had to service rather than other brands. I am not sure if that's because that's what everyone purchased, or if it were only those that had severe issues. However, I have noticed most of the Dell laptops are from around the same era.
I recently purchased a refurbished E6430 off of their website and it was one of the best laptops I have ever had. I did end up contacting support to ask about something and I had a generally positive experience there as well. I can't really complain about any aspect of the transaction. It is a Linux-compatible laptop and the experience was great overall.