No problem Kayla. The Series 27/28 journey can be a lonely one!
The Solomon study plan they laid out for me was 4 weeks which unfortunately put me exactly on July 4th so I pushed the test back one week. Each week they would have you read one or two chapters and take so many practice tests consisting of a certain number of questions and giving you the score you should be getting before moving on. In week 4 you turned to simulated tests that mocked the real exam as far as same number of questions and they indicated what you should be getting in order to be ready for test day.
I did use Kaplan for my 1st exam (27) and my retake (switched to the 28). I had been reading the material so much I got to the point I could recite the book from memory. None of that helped me on test day, still missed the mark by 2.
I didn't like that Kaplan limited you on test questions (their database is limited) and only allowed you to take a simulated final exam once ( 1 test for 27 and they will give you the 28 test as well). 28 is same material as 27 but 27 you have one or two additional chapters of material you need to study. Solomon gives you unlimited tests, I didn't see a whole lot of repeat questions but there were some.
Neither Kaplan nor Solomon offered video lectures for this test. Solomon does offer audio but if you are more of a visual learner that doesn't really help. My company did look at the other vendors they use but weren't able to locate a video lecture for me. Test Teachers used to offer 27 video lectures but last I checked they stopped offering 27 study material.
The other thing you might want to do if you haven't already is go to FINRA.org and print out the test outline. This will let you know what topics you can expect to see on test day. After I took the test in Dec the format changed. If you go with Kaplan, just wanted to make you aware. I'm not sure if they updated their study material, my access still has the same layout and they don't mention the test format has changed in their update section. Solomon follows along with the new format.
Happy testing!