Oct 9-10: distributed database apps and ASP.NET / AJAX

As I've mentioned a few weeks ago, next week I'll be presenting a 2-day masterclass for the UK Developers Group in Upavon, Wiltshirt (UK) to give a 2-day masterclass on Distributed Database Applications (Win32 as well as .NET) and ASP.NET techniques.

During the last slot on that first day, I plan to either cover SOAP Security (as part of securing Web Services, one of the techniques used for the distributed application), or RemObjects SDK version 4.0 (a third-party product for Delphi, that can also be used to build distributed applications).
While I could prepare both topics, there is only time to cover one of them, and I would like to know which one people would like to see (if it's fifty-fifty I may have to decide myself, but if there's a great majority for one or the other, then the choice will be clear).