If you are interested in Higher Studies or research in same stream then you may go for M.Tech. you should have 55 % in B. Tech/BE and a valid score of GATE. I am enlisting a few good colleges for Mtech : IIT Roorkee, IIT Guwahati, DTU, IIT Varanasi, IIT Dhanbad, NIT Surathkal,NIT Tiruchirappalli, NIT Warangal, NIT Calicut, , Lovely Professional University, Jalandhar ,Punjab, College of Engineering, Anna University,DTU,VIT, BITS, IIIT Hyderabad, IIEST Howrah, College of Engineering Pune, Jadavpur University, IIIT Allahabad,Anna University

If you are not interested in learning technology any more , only then you should pursue MBA. You should have cleared any one entrance test ( such as CAT/MAT/XAT/NMAT/CMAT/GMAT/NEST ) and should also have min of 45% to 55% in your bachelors .you can do MBA in any specializations of your interest.Some Good Colleges are: IIMs , XLRI

Goa Institute of Management

Lovely Professional University-Punjab

K.J. Somaiya Institute Mumbai

D.Y. Patil University

Both qualifications offer good placements and a stable career, the decision should be decided well.
While an MBA prepares you for generalist roles and opens your avenues in non-technical industries, an MTech qualification offers you plush jobs and a freedom to take your love for technology to the next level.
An Mtech degree offers opportunities in the academia, research & development and technical fields. On the other hand, an MBA opens up avenues in banking, finance, consultancy and other roles, which may not be technically driven.

So you need to decide which path to take. Money will be a secondary requirement once you get going in either. A PG degree offers a decent package anyway. So opt for a course based on your interests.

Hope this helps.