The t440p is a tank and with a 4core i7 still a capable machine and one of the only mobile machines that you can properly tripple boot with Linux, Mac OS, Windows each on a physical HDD. (1x m2 and 2x sata ssds). You can get one for 120 bucks and update nearly everything (don't get the one with Nvidia graphics), spare parts are cheap and plenty. I run a 2560x1440 IPS panel, 16GB RAM, i7 4710mq, 3 disks and a t480 touchpad (needs a slight mod). The only downsides are the missing usb-c and form factor if you are used to ultrabooks.