Unix friendly hardware free of proprietary software

hi,

im looking for Unix-like/Linux friendly hardware(desks,laps,phones,etc)
free of proprietary software or compatible with free software(OS,BIOS
firmware,etc) something that is easy to replace stock or something that
cames with free software preinstalled and that i can replace them if i
want to.
i've seen some lists that contain vendors that are Unix/Linux friendly
and also the hardware endorsed by FSF which seem to be Lenovo
thinkpads,etc the thing is it seems most of hardware require external
flashing to replace BIOS,etc and makes the task harder..

my question are,
what are the bests Unix/Unix-like/Linux friendly hardware manufacturers?
which hardware is the best to make a computer 100% free (free BIOS and
OS) and that is optimized and behave better under Unix/Unix-like/Linux
based OS's?

Thank you.

--
PHACT Phreakers / Hackers / Anarchists / Cyberpunks / Technologists