While choosing a college for MTech between NITs and IIIT Allahabad you can refer to the following preference order. The following colleges have been ranked based on curriculum, placements, faculty, research work, student life, infrastructure, and other important aspects.
The reason I have placed IIIT Allahabad second last is because IIIT Allahabad is known for its BTech program and nit MTech program. Most software companies don’t permit MTech students to sit for placements and prefer BTech students only. You can not match the level of IITs and NITs. Moreover, you will find no passionate coders in MTech IIIT Allahabad.