My sister studied at Vignan University. It was not the best experience for my sister but it may be different for you.

• Vignan University has a high course fee. For a 4-year long B.Tech, you will have to pay around 9 lakhs in total. The university charges nearly 2 lakhs per annum without hostel accommodations. 
• The faculty base is good. Most of the faculty are graduates from NIT or IIT. 
• Placement record of the institute is not that great. From my sister’s batch, only 400 students out of 1200 got placements. The remaining 66% graduated without any placement offers. 

The environment of the institute is not that good. There is caste-based politics on campus. If you have other better options, then you should go for them, instead of VIgnana University.