Yeah, it seems to be a well kept secret (sorry I couldn't resist), a lot of good pearls for the exam. I'm pretty much sticking with boards 'n wards, secrets, and questions as my plan (i'll let you know in about 2 months if it worked for me or not).
I used Step 2 Secrets for the COMLEX Step 2 (DO version of USMLE) and scored 99%ile. I have a good feeling that book is what helped me, as I am by no means a smart cat.