Took the lovely thing that is step 3.
Day 1 - long day with loads of question blocks. Minutia for sure, on a few... like, we're talking random step 1-ish type stuff that we would all look up if we thought a patient might have it. LOADS of Ob/Gyn, quite a bit of Peds (but maybe the same amount, but I dislike Ob/Gyn and noticed it more... as another poster said, loads of Qs starting with __yo G_P_... blah blah blah)
Day 2 - short day, and I do mean short! The question blocks were short, I thought more straight-forward than day 1 but perhaps I was just less fatigued? The cases were very straight-forward. Mine all ended in 6 minutes or less, and I got to take my time with the follow-up orders because I didn't feel very stressed. In hindsight, I know I made one mistake, and hope it isn't a huge score-subtracting one!!

Other than that... bread and butter cases for the most part. Good mix of disciplines and organ systems. The day ended before 12:30PM. Wow! It was like vacation.
Score... and I wait....................
As for how I thought the prep went...
UW Qs about 78% complete, 77% correct random untimed on tutor
UW CCS, did about 40, read through all explanations at least once
FA mini-cases (didn't even glance at the rest of it!)
MTB read through 60% very thoroughly, the rest glanced over, glanced over the whole thing once more before the exam
What I am most happy with: cases (especially the UW ones, which really prep you for the real thing despite some flaws in the software) and MTB. UW MCQs are always useful but I don't know how much I re-learned from them and how useful it was other than getting back into the groove of doing countless blocks of MCQs.
What do I wish I had done more? Probably more detailed reading in Ob/Gyn, ID, and Derm... especially Derm, believe it or not. Random rashes related to random disorders in various systems. It would have helped on at least 10-15 questions total. Oh, and of course, I wish I wasn't an intern trying to find time in my over-hours weeks to study. Some things are just out of our control.
As for those random super-specific step 1-type questions? No way to predict or prep for them. You either know it or you don't or you're a darned good guesser if you're lucky.