JAA ATPL Exam Preparation Software.

Hallo people

I need your professional help.
I am trying to get the JAA ATPL(A) license. All so I wont to be ready for the exam preparation.
I found different cainds of sowft, but I got stoked by this ones.

Oxfords question bank – http://www.oatmedia.com/proddetail.asp?prod=4JAA

Aviator – http://www.aviator24.com/

Aviationexam – http://aviationexam.com/

By Oxford 2000, by Aviator at 6500+800 solutions, at last 14000 (AIRPLANE +HELICOPTER)

Different prices.

Question to you, experts- what you thing about that- what’s better?
Base of oxford is not enough, I don’t know much about aviator24 etc.

Do you have any experience?
What would you advise?

By,