I bought this Acer Aspire 4720z in 2009 from local market shop in Gurgaon. Since then I am using it frequently almost on daily basis. I played so many games on it, connected high watt speakers, used it for hours on battery, formatted and installed windows many times, used its camera for recording and frequently using it for official work too. etc. I used it very roughly in these 6 to 7 years but its still performing very good except the battery which I replaced on its 3rd year.
I will strongly recommend this product . specially for students.