A New Automated Build Engine For Java?

This is at least new to me. luntbuild appears to be a new entry into the field of automated build software for Java projects. I’ve only used the free version of AntHill but CruiseControl is a popular alternative.
Could anyone comment on luntbuild? It looks very nice and the support for subversion and more control over tagging of a build are appreciated. Anybody out there familiar with several of these who could give a comparative review?