The IMS mock test series for CAT 2017 is definitely the best in the market. I had taken mocks of all the major players, but the mocks of IMS stand out. The mocks were really close to the actual CAT paper. It is definitely a must do for all CAT aspirants. Also, IMS’s GDPI book was comprehensive and contained all the information needed to crack the interviews. Well done to IMS in compiling such a great book.