XML and XML Variants

Have created and/or parsed thousands of xml files (see automation for explanation on why so many) using combination of jdom, dom4j, xerces, xslt/xpath.
 
My two current favorites are dom4j and xslt/xpath, using a combination of these two technologies I have found it extremely fast to do just about anything I need to do with xml.
 
I am a member of the XML-haters club which tends to be found at the periphery of IT everywhere.
 
To clarify my experience with the xml variants see pages linked below: