Jntu karimnagar is better than cmrk as it is government associated body. It has an overall rating of 3.8/5 currently whereas 3.5/5 of cmrk. The placement records are better of JNTU. The only concern is that only TCS visits karimnagar branch for rest Hyderabad campus has to be preferred for placement activities as all placement related activities are carried out in Hyderabad. Hope this might help