For Paramedic NREMT Exam I highly suggest the FISDAP study tool, Comes with over 3,000 question test bank, you get to answer 200 questions and afterwards it shows your weakness and what to study. They say if you can score a 70% or above on there 200 question exam your should't do that bad on the National Exam. Also help for Basic as well, they have an exam for that too.
Took the exam on September 27, stopped me at 70 and PASSED! I studied the JBL Orange book along with the powerpoints my class has provided. The JBL EMS test prep app at the EMT level (great study guide by the way, it provides about 500 questions and it always provides an explanation for the correct answer), considering I took the class a year ago, I think test prep app was definitely worth it.
Passed the NREMT Basic test at 70 questions, felt like I had completely failed it.
Passed the NREMT Paramedic test at 80 questions, still felt like I had completely failed it. Got my results the same day though!
Mirroring what Srt4ever said above, I also used the FISDAP study tools for the paramedic exam. It is pretty good IMO. The final they have lets you know what areas of the curriculum you need to work on and such, is very nice.
(P) Test stopped at 91 or 92. Found out later that day that I passed
The crazy thing about my test was that the first THREE answers were all the same, and later on 2 different questions had the answer be Thyroid Storm (seriously?). Thought for sure I would be re-testing.