You are asking for both govt and private colleges. In Govt colleges preference should be IET,BIET,KNIT,they all three good for study with low fees,IET is having quite good placement for CS,IT branches also.Apart from these in private collges,in NCR JSS,G.L.Bajaj,Galgotia,NIET,KIET,AKG,RKGIT are few famous choices in same ranking as i have mentioned,for both study and placements,all these are having course fee around 1.4 lakhs per year plus hostel fee starts from 80k thorugh upsee counselling.Decide and fill your choices accordingly.