Dear Aspirant 

First of all Congratulating you on your nice performance that you deserve all  these nice colleges. I would like to tell you that iert is a private engineering college but you are getting decent branch. On the other hand biet and knit is government colleges but you aren't getting computer science engineering so if you prefer branch Cs over it then you should iert but if you are thinking of government college then you should choose biet and knit.

Good luck for your admission :) 

Feel free to ask if you have any further queries.