[xsl] best practices, insert PI with XSLT or otherwise?

[Hoskins & Gretton <hoskgret@xxxxxxxxxxxxxxxx>]

HI, I have a set of XML files in which I want to insert a processing 
instruction after the XML declaration. I could use a text function 
type of "search and replace" or XSLT identity template + override. I 
work with a Java programmer, so everything can be solved best with 
Java from her point of view, and I work with XSLT, so you know my 
preference. Is there ever a reason that a non-XSLT process would be 
better than XSLT?

Regards, Dorothy