How about StaxMat e - very lightweight, faster than a cardboard object solution (XStream or JAXB), still reasonably easy to use for many use cases.
Of course, this depends on how quickly you mean the time to write the code (if so, XStream is probably the thing) or the time it started (in this case, simple Stax / SAX script writers like StaxMate or XMLBuilder, things); XStream is not particularly fast, although it is not the slowest thing.
source share