[XeTeX] Good Text Font + Math Font Combination

[Tobias Schoel]

Hi,

as there seems to be only Asana Math and XITS Math as free and complete 
OpenType Math fonts distributed along texlive the following question 
arises for me (as I used to use Linux Libertine as text font):

What is a good text font in Combination with Asana Math respectively 
XITS Math?

Because I don't use Windows (or MS Office), it should be free (best: 
distributed along Ubuntu or Texlive).

Thanks for your Help and all your work on xe(la)tex and its packages.

Toscho