Hello Shambhavi, 

The best colleges among these depends on the branch like if you are into CSE then go for GALGOTIAS and for CSE and other branches go for KIET GHAZIABAD. Overall i would recommend you for KIET GHAZIABAD ad it has great faculty members, experienced lab assistants, goid alumni, good  campus and hostel facilities.

I hope you will find my answer helpful. 

All the best.