I have the following prep material for CS. I dont think there are any more resources on the market for USMLE STEP 2 CS. In my opinion, First Aid and UWorld should be alright. But if you need more practice there are other Step 2 CS prep courses. You can check their website.

UW Step 2 CS

First Aid Step 2 CS 4th edition

Kaplan Step 2 CS: 2014 version -

CSE Videos:

Archer Review course:

Premier review:

All the courses are latest review material. I am willing to help anyone needs these resources.

Please email me: kaplanprep at hotmail dot com