Perl XML Quickstart: The Perl XML Interfaces:
“This is not an exercise in comparative performance benchmarking, nor is it my intention to suggest that any one module is inherently more useful than another. Choosing the right XML module for your project depends largely upon the nature of the project and your past experience. Different interfaces lend themselves to different kinds of tasks and to different kinds of people. My only goal is to offer working examples of the various interfaces by defining two simple tasks, and then showing how to achieve the same net result using each of the selected modules.”