I'd like to buy one comercial mock suite. I've been thinking about Whizlabs or Enthuware, but the problem is that I am able to find only mock exam kits for CX310-055. Do you know if any of them can be customized so that it includes only the questions for the SCJP 5.0 Upgrade exam?
After doing some Googling, I came to another comercial mock: uCertify. It seems like that one has a CX310-056 exam. Has anyone tried it out? How are its questions in comparison with the real exam?
I'd like to hear from fellow ranchers' experiencies and also from people that represent these companies/products (I've read, from time to time, posts from Whizlabs' and Enthuware's representatives).