You should go for Mar Athanasius College of Engineering, Kothamangalam as it has AAA+ rating which means good. It has good Infrastructure. It offers good placements, exposure and faculty.

You can also compare both the colleges from the given below link

Mar Athanasius College Ratings and Reviews

NSS College Ratings

You can consider Electronics and Telecommunication Engineering (ETE) as a subset of Electronics and Communication Engineering (ECE).

An ETE course must cover Semiconductors, various devices based on them and their abstractions (courses on Analog Electronic Circuits, Digital & Switching Circuits, and Systems, Microprocessor, Linear IC Systems, Embedded System, Power Electronics,

Electronics and communications engineering deals with the design and development of electronic circuits, equipment and machines.

While Electronical Engineering is related with telecommunications engineering, control engineering, instrumentation engineering, computer engineering and Very Large Scale Integration (VLSI) design engineering.

If we talk about the scope then ECE is the best option.

At present CS is trending and is demanded by most of the students.
CSE is one of the popular courses among engineering aspirants which focuses on the basic elements of computer programming and networking. Students pursuing computer science courses will gain knowledge of design, implementation and management of information system

Both branches are good it depends on your interest & capability & have the scope in its fields.

EEE: Electrical and Electronics Engineering branch deals with Electrical technology and machines, circuit analysis, electronics, electromagnetism, electrical engineering materials, instrumentation, control systems, power engineering and transmission and distribution. 

ECE: This branch

ECE has a huge demand for competent engineers in electronic industry to cope this demand in technology. In coming years scope of ECE will increase. Candidates have ample opportunities in this field. Electronics and Communication specialists can work in both private and public firms.

Electronics and Communication Engineers are acquired