I got an hp pavilion just before Xmas nd I've had nothing but trouble I wouldn't have another. Dell, advent, toshiba, Acer and Samsung are all good from what I know of them. I think most of the time the make doesn't really matter that much just look for good spec rather than brand
Forgot the Gateway, but that's probably not in the running, these days. I'd look for HDMI and possibly USB 3 as part of spec of any new device, HDMI in case you want to watch a film on big TV screen, USB 3 for ability to use faster backup devices in future.