What should be the preference order for MTech branches at IIT Kharagpur with GATE EC?

IIT Kharagpur M.Tech students are open to 6 specializations on clearing GATE EC

• VLSI from E and ECE department 
• Visual Information and Embedded Systems
• Telecommunication Engineering
• RF 
• Wireless communication and Networks
• Embedded control and software

Wireless communication and Networks specialization was recently initiated at IIT KGP. The curriculum and faculty are said to be good based on reviews from students.

VIPES and ATDC specializations are related to software while ATDC has Embedded systems. The rest of the specializations are similar to that provided at other IITs.

The preferable order is as follows - 

VLSI, VIPES, Telecom>RF>ATDC>Wireless communication and Networks

As far as placements are concerned, VLSI, VIPES, and Telecom have the best placements.