whiz labs sample tests...

When I took my SCWCD I bought the whiz labs sample tests and found them helpful. I read in a previous post here that someone felt they weren't helpful for ibm 141.
Anyone have any thoughts on the usefulness of the the whizlabs sample tests for ibm 141?

I've not used whizlabs product. But checkout what JDJ has to say about it
http://www.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=52&t=000240

Later,
Hema

I agree to Johannes. Its really worth it.
But do not consider it as the only source for preparation...
best wishes
rony

Thanks for the feedback
I think I'll read Professiona XML and then use the whizlabs sample tests to figure out what else I need to read to pass.