I want to know that out of CSE or EE at NEW IIT's and MME at old IIT's. What could be a better option.

Dear ankit

I will suggest you to go for MME in old IITs.

for more detail of seat allotment you should refer the link

http://jee.iitm.ac.in/counseling/

Please feel free to post as many doubts on our discussion forum as you can.
we will get you the answer and detailed  solution very  quickly.

 All the best.
 
Regards,
Askiitians Experts
Badiuddin