Using a t440p base as my laptop, best laptop for the buck. bought it as a 4300m model with a dual core. now it has an IPS display, better coreboot+bios update, 32gb ram, i7-4712, 2x 512gb ssds plus a 4tb hdd. all together cost me less than 600eur. hackintosh compatible if necessary, though it's running Arch these days.