As per my experience I personally recommend freshers for this classes.
They have best teaching technique.
Faculty here are very friendly.
They give there 100% and solve all the problems.
The also personally help with any problem.
Administrator of this classes is cool.
They have there personal notes with a solution kit even too for subject like maths that too hand written.
For 1st year student, professor of mech department have very great experience of particular subject and I surely guaranty one will not get chance to complaint.
One best side is they have sound system in class, when there is break music is played so that students mind will get fresh, they can generate good mood.
They have batches of 50-60 students, they have equal attention on each student.
Overall its upon a student whether to get the knowledge.
They give their best.