In general, over the past many years, engineering degree has lost its charisma; largely due to several students enrolling into the ever-increasing number of engineering colleges. Your degree only gets a value when you learn stuff during that time and perform using the expertise. Degree from NIT is just the same case. If you learn stuff, it adds value, else it doesn’t. Several people who graduate out of NITs too end up on the roads after graduation, mainly because they never bothered to learn anything useful, and just passed the exams for exam sake.
Best NIT is a tough decision to make, and depends on what parameters you consider for the same. If you go with overall development & consistency, NIT Trichy stands out compared to others. It has remained more or less in same position for a long time. NIT Warangal and NIT Surathkal also are good NITs. Hope I answered your question!