Is Samsung's quality really that bad?

I am buying a new laptop and a certain Samsung model that is on sale right now caught my eye. It looked perfect and I was about to buy it when a computer-savvy friend of mine told me that I shouldn't expect my Samsung computer to last more than 2 years. That stopped me. I would like a computer that would last at least 4 years, assuming I take good care of it. The model is RV418-A02 for the record. Should I listen to my friend and go with a different brand (Toshiba, probably) or should I stick with this Samsung? I just want a somewhat cheap, fairly-priced computer that will last me a while.