Thinkpad T500 with Libreboot (that is 100% libre bios replacement, coreboot fork with blobs removed)
Netbsd runs fine here, previous versions 8.1 8.0 had problems with intel drm stack, laptop experienced random hangs Reported the bug and it has been fixed with 9.0, now it behaves like linux kernel 4.4 :-).
As for the usage is web surfing, browsing open source games, learning about unix.
Still considering to come back to Linux cuz some random windows games that run with wine keep appearing to my head.... ;-(.