Jensen Harris, one of the Microsoft Office developers has a whole
explanation of the new fonts at his blog here:
http://blogs.msdn.com/jensenh/archive/2005/12/07/501009.aspx
TNR was original developed as an easily readable type face for narrow
snaking columns using relatively small print on poor quality paper using
ancient printing technology. In today's electronic world where much reading
is done on a digital screen and printing is done using quality printers, TNR
is not the best font for easy reading.
Personally I dislike TNR and I dislike the new fonts even more. The
exception being SegoeUI which I find really easy on my aging eyesight
especially on screen. It is particularly good for emails.
But this is all a personal preference.
