Last night, I wrapped up the first release of my RSS 2.0 parser using the StAX API. It's tentative name is BlogStAX and you can download it from the BlogStAX page. Beside the obvious speed, you might find its design rather interesting. While it is definitely not a turkey, consider this my Thanksgiving present to the open source community. 🙂
FYI, BlogStAX doesn't validate RSS feeds. It used to validate and report the errors via the RSSValidationListener interface, but I ripped it out because validation checks were not complete.