This textbook is a bit heavy but worth it for the amount of content inside.
Product Tag: 9781264855100
Tao Le Daniel Griffin Vikas Bhushan Marin First Aid for the USMLE S (Paperback)
A nice touch in this textbook is the review questions at the end of each unit.
First Aid for the USMLE Step 2 CK, Eleventh Edition
What stands out about this textbook is the attention to diverse cultural examples.