I am using this acer 4720z model for like for 8 years n m using this on regular basis .and its looks like new
its a great product though I also own acer travelmate both of them are running perfectly.
well acers service is great there are times when my 4720 model had some issues and I was worried that they will charge me like hell like any other brands they just throw there resposibilities n wont gives u warranty but they resolved it without a penny charge and both of them running well.its reliable n satisfactory!