I agree with Camel. No need to overcomplicate it with XML, especially a non-standard package like xmlbeans. Properties file is simpler and sufficient.
If you can bind it to a class, then I'd definitely go with that. The XML approach has the advantage of having a schema describing all of the settings, making it a bit more transportable, but since it's just a local settings copy, it doesn't matter.
For reference, Ender, you don't have to include any xmlbeans libraries when you ship your binaries. It uses a schema compiler to turn a xsd into some java classes that describes the type(s) you define, which you then use in your code and that's all there is to it.