XStream or Simple

Question

I need to decide on which one to use. My case is pretty simple. I need to convert a simple POJO/Bean to XML, and then back. Nothing special.

One thing I am looking for

Answer 1

Was taking a quick look at simple while reading stackoverflow; as an amendment to Paul Marshalls helpful post, I thought i'd mention that Simple does seem to support versioning through annotations-

http://simple.sourceforge.net/download/stream/doc/tutorial/tutorial.php#version