Hello,
The colleges you have mentioned have almost the same standards. The student ratings for gudlavelluru engineering college are comparatively better than the ones for annamacharya institute of technology and sciences. To read the student reviews, go through the link mentioned below-
https://collegedunia.com/college/13642-gudlavalleru-engineering-college-gec-krishna/reviews
To know about Gudlavelluru engineering college, go through the link below-
https://gecgudlavalleru.ac.in
Good Luck!