Both college are good in their own way.Kongu college is a private college ranked 135th by NIRF whereas the other one is government .Government college are always preferred over private by all of us.Placement package for both the college are somehow almost same 3-4 lakh per annum .But Government college of dharmapuri has a little less opportunity than kongu college in placements.It depends on your choice and the choice of branch.For more details do check the link below for both colleges :

https://www.careers360.com/colleges/government-college-of-engineering-dharmapuri

https://www.careers360.com/colleges/kongu-engineering-college-erode

For comparision you can use our comaprision tool link given below:-

https://www.careers360.com/compare-colleges?icn=college-compare-landing&ici=question_detail

Hope it helped.