wM Designer (Eclipse based) is the best bet…I have handson user experience and it provides best inclass support for (full BPM/Human Work Flows,Web Services interaction(SOA),Composite Application/UI portlets (JSR-168 compliance) All-In-One prospective)…
Well with Savvion – no comments…
Include Tibco iProcess Suite aswell in your list of good tools esp for BPM+ wise…