Hi!
Most of my classmates started studying in January, though it was pretty leisurely up until about a month before the board exam. I got through the material twice before the exam, for reference.
Some classmates used Optoprep, some the KMK course, some both, and a few people just used old KMK books with nothing else.
I used Optoprep and KMK and I'll tell you what I liked first, then what other people did.
I had to look up what course I purchased, but it was KMK Plus. I feel like Signature is overkill, but I guess it all depends on how motivated you are to get through the material on your own.
KMK was GREAT for review. Every school goes through things differently, and it was nice for KMK to condense all that information in a way that made sense in the videos. There was a lot of repetition too, so I felt like having something to watch made it more engaging for me. Keep in mind that there's a LOT to go through - and the more you buy the more time you have to dedicate to studying with it! So if you do Signature, will you get through all the extra material? That's how I look at it.
Optoprep was good for questions, but if I were to do it again I might share instead of buying it on my own. Some of the questions are really random and stuff you've never heard of before, so for me it was a good way to not get too confident on KMK. I didn't end up going through all the questions in the end anyway, and that was even with sharing my account with a classmate the last two weeks.
Optoprep tests were really hard compared to the actual exam, and KMK tests were too easy. I liked having both to have a good reference of my weak points.
Some classmates shared KMK, which looking back wouldn't have been a bad idea, but I liked knowing what I personally had already gone through. Another benefit to buying the course is that you can go to the live lecture they will host at your school to kickstart your studying.
Let me know if you have any other questions, hope this helps!
