X200 librebooted, T60 15" 4:3 librebooted, T61 14" 4:3, T61 15", X230 corebooted, T400 librebooted, T410 corebooted, T430 corebooted
The T430 mostly, on the road the X230, both have the classic keyboard mod. But my favorite is the x200 without trackpad.
Yes! It boots fast and reliable, the whitelists are removed, the intel ME is removed. Coreboot also allows you to set the ram clockspeed, if your modules support it. In my case i run 16gb of ram at 2133MHz.