<p>I HATE Barron's. I guess I got an 800 in math after using it (got 760, then 770 the first two times) but I used it extensively for reading and writing (not so much math) and those scores dropped a total of 110 points. It's so annoying too, its like "2400 club members do this, but not that..." Well apparently I'm nowhere near club member status.</p>
<p>Sorry about that little rant, but to answer your question, I'd say that just keep doing practice tests. The material isn't hard, it just allows you to make easy mistakes. And if you get a 750 or above, I really don't think it matters that much, just that some people happened to not make any stupid mistakes on test day.</p>