I just wanted share my thoughts/experience with Achievable. I used pass perfect and achievable to prepare for the SIE. I have no formal financial background other then watching some CNBC off and on haha.
Pass Perfect is a lot more in depth and really goes into to detail.
Achievable is more along the lines of what the test was like. I used achievable mostly for the unlimited practice exams. These practice exams are what helped me pass the exam. I was able to take 10-15 practice exams while never really seeing the same questions over and over.
I now need to find a sponsorship/employment to take the series 7 but I think Achievable is the best way to go!