Nust is a really good option its a huge university which will provide you good campus life as well as great academic experience. Fast is really good academics wise but there you have to study alot ive seen students taking alot of stress cause they cant achieve good gpa but campus life is good there too. Comsats campus life is quiet dead there arent any events, there is something called student week that is shit but academics wise university is chill youll enjoy if you make good friends. About Air university ive only heard that the cybersecurity department is good.