Boson Vs. Pearson Test Engines

Ken217a

I have been look at getting the Boson Practice Test for the Cisco CCNP Switch exam 300-115. Then I looked at the Pearson e-book with practice test. Has anyone use either of these, and which one would be better? I am not going to buy both. The Boson only comes with some 160+ questions. But the Pearson saids it comes with 400 questions. The Pearson is cheaper, and includes the e-book as well. Then when I read the review of Boson, even though it has less question, it does have simulator within the questions, more like the real test. SO, now I am clear as mud, as to which one to get. Any help would be great.

Thanks, Ken