I have purchased this particular model around 6 months ago from amazon.com & I found its configuration to be really apt for modern day usage. But it comes with Ubuntu, the operating system, that is a drawback because this OS is not at all user friendly. U have to surely install some other operating systems from internet otherwise it would be really tough to work with. I like this brand a lot owing to my previous experience so I bought it & its ram, hard disk, processor proved to be good in these 6 months. But another disadvantage is its screen size, 15.5 inch is seriously too huge to carry to your office or to a tour. It should have been a bit more handy so that it could be handled more comfortably.