If you like the first responders then you will definitely like trace drama also.

The differences are:
Trace is a cdrama and the first responders is a kdrama.
Trace cast only have detectives, a psychologist and a forensic science but the first responders have a detective, a firefighter and a paramedics.

Similarities are:
Both dramas have investigation and interesting cases.
Both dramas have ml as detective.

Anyway I will just say watch it you will not need to skip a lot in trace drama and if you like investigations then this is for you.