Pete,
I haven't tried Office 2010 on Windows 8.1.
I did try Office 2013 on Windows 7 and the font rendering was almost as bad as it is on Windows 8.
I do remember reading a comment from someone on one of these threads (I can't find it now) and they said Office 2010 renders fonts clearly on Windows 8.
If I get a chance tonight, I will install Office 2010 on Windows 8.1 and see what it looks like.
Thanks for replying Dr Geek. I'll be very interested to know what you find if you do get a chance to test Office 2010 in Windows 8.1.
If Office 2010 is just as clear in Windows 8.1 as in Windows 7 you'd assume it was a pretty straightforward for Microsoft to give you the option of disabling their new blurry font rendering system-wide for non tablet users.