"I've had the 16 GB, i-7, 3rd-generation model for several months, without any problems. The unit is quiet and cool. I use Windows 8, Office University 365, 12 MBPS internet, and various cloud-compatible browsers, again without problems, to do mostly QuickBooks, Excel, Word, and OneNote. The included keyboard and mouse are NOT keepers. The large, floor-suitable case comes with a 3-speed switch, which I leave on the fastest speed. I connect to the internet with a short wire to my router. Two Lenovo options that I DON'T have are probably worthwhile: the wireless connector and the removable hard drive. I'm very happy with this computer, but you might be happier if the removable-hard-drive slot and wireless connectivity were functional."