Hello srinivasgupta58980,

Well, I suggest CVR CSE, as no doubt if you are looking for branch change then you must not be interested in BioTechnology, and you must opt for your preferred branch...No Doubt NIT Warangal is a way better college but Branch change is very rare, and very difficult to opt... if your branch is changed then you are lucky, but if not then what?, it is a matter of your career and you must not take that as a risk ... Almost 90% of students in NIT WARANGAL of Bio Tech must be willing and preparing for upper branches, but they all get that, the success ratio of branch change is very less...

Choose Wisely,

Good Luck!

Hope This Helps, and feel free to ask any further query...