[texhax] What is better?

[Victor Ivrii]

I often use ${\bar x}$ and ${\bar \xi}$; however if these symbols are
near the bars which are on the different heights do not look
aesthetically right. I can use   ${\bar {\matstrut x}}$ and ${\bar
{\matstrut\xi}}$ but then bars are too high.

Surely, the same story with \hat, \tilde etc and with any letters of
the different height. What is considered to be more aesthetically
appealing (or, at least, less appalling)?


Thank you for your opinions
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Victor Ivrii, Professor, Department of Mathematics, University of Toronto
http://www.math.toronto.edu/ivrii