I sat my test yesterday and here are my thoughts.
VR - the new format questions made up around half of my questions.
QR - much easier than the 600Q book and official tests. Similar to the short practice test and the Kaplan score higher book + online mock. The questions on Medify varied a lot in dfficulty but this was not the case in the real test.
AR - Similar to official mocks, Kaplan and Medify, but easier than 600q book.
DA - same as most practice materials and the codes were not that long as I had expected.
SJT - I probably only answered half the questions correctly and I got a Band 2.
I got an average score of 680 - better than any score I had got in all the different mocks that I tried.