I'm writing a thesis and decided to use Charter (\usepackage{XCharter}) for text and Palatino (\usepackage{mathpazo}) for math. Unfortunately the commas in Charter and Palatino look very different, so I run into troubles when writing lists of variables in the text. Here's a minimal example:
The polynomial ring $\C[x,y,z]$ has variables $x$, $y$, $z$.
This renders as:

Is this difference in fonts acceptable or should I consider using a different combinations of fonts?


LaTeXit is a design problem, more correctly a bad typographical combination. In design it is suggested to use only one typeface, maximum two. It's not necessary that the chosen typefaces live together happily forever, but, as a rule, should not collide. And in this case they do. – Aradnix Aug 08 '14 at 21:21