Barron's Spanish Vs. Real thing.

<p>I'm studying up for my Span. subject test with the barron's book. I am taking it in november and was basically forced by collegeboard to do the w/ listening test, but i might change it when i get there if they let me. Anways, how difficult is barron's compared to the real thing? Also, what are the pros/cons of the with listening? </p>

<p>I'm a non-native spaker wtih 3 full years under my belt.</p>