Wanted: recommendations for UML tool

[Anish Karmarkar <anish.karmarkar@oracle.com>]

I'm trying to recreate Tom's diagrams and update it w/ all the changes 
that we made to the model. To that end I have been trying 
out/investigating UML tools for class diagrams. Any recommendations?

I looked at/tried the following:

1) Enterprise Architect: it is not free, more importantly it is 
available only on Windows.

2) GenMyModel.com: browser based. I started recreating Tom's diagrams 
and quite liked it. Unfortunately the free version is limited to ~5 
classes. So unworkable.

3) Creately/Gliffy: free version is very short term/limited. Didn't like 
the interface/features much either.

4) ObjectAim UML explorer Eclipse plugin: looking at some of the 
diagrams online they seem to be Java-specific. But I have tried it out yet.

Has anyone tried StarUML 2?

Thanks.

--Anish