My preference would be

Nitte (good placements, good campus, location is a bit outside the city)

SJBIT(good placements, excellent campus,location is okay)

CMRIT(good placement,excellent campus, excellent location)

DSATM( placements highly depends on DSCE, excellent campus,location is okay)

Acharya(good placements, excellent campus,location is okay)

Reva (meh !! Reva is a private university now so personally i wont prefer Reva at all)

From all the colleges you mentioned Nitte has a advantage of being an Autonomous Institute.

All the best