I live in a third world country with little access to computer resources. I have had to change my computer every year because they invariably ‘slow down’ No amount of tinkering seems to improve this. I also assist other people in my town with their problems which are invariably the same. I have now got an HP lap top and have had no trouble at all with it. My experience with most of the others listed is that they all suffer a ‘slow’ death.