You ARE aware the OP had no questions about which OS to use... Neither
do you. Yet two of the four groups you include in the post are OS
related. The last line of the post is clearly a troll. None the less,
let's see if we can salvage something useful and informative from this
shall we...
To answer the final line... As others have pointed out, M$ does not own
HP. They may have a "strategic alliance" but not direct ownership.
From an OS perspective, clearly as the OP points out, the machines were
designed to run Windows. Generally speaking, if it ain't broke don't fix
it. From what I've been reading and seeing on Youtube, Windows 8 is not
suited to anything other than tablet devices. Windows 7 is much better
suited to the desktop. If the situation is such that the OPs company
ABSOLUTELY NEEDS to replace Windows with something else then Ubuntu (or
as I would suggest Mint - which is closely related to Ubuntu) is as good
a choice as any.
I do volunteer work at a computer recycler/education business as a
sys-admin. We get the machines companies recycle and loan them out to
students. Most of the students want XP and since that's what the
stickers on the boxes say, that's what we give them. We have a number of
Linux boxes we loan out as well. We put Mint on these. I can't say I've
ever encountered an SX 270 but the GX 270 machines don't like any
version of Mint newer than two years old (Mint 10). It's still newer
than XP but the hardware was not designed to run it. So far HPs have
been pretty good (we are starting to get a few more of them). We are
still clearing out the Dells so we haven't had the opportunity to try
anything less than 11 months old (Mint 12) on an HP.
One last thing. In slow moments I am investigating the use of the LTSP
to see if it would be useful for classroom/office use. Essentially a
diskless computer would netboot to a killer server and run it's programs
from there. This way companies won't have to upgrade their desktop
machines as often.
Later
Mike