I've seen most of these and find Kerry Daynes is the only one worth listening to. She has the ability to get to the root of the person and the crime and what she says makes a lot of sense.
The other two, Dawn Archer and Cliff Lansley basically say exactly the same things on every episode. I've lost count how many times Cliff Lansley has explained the slight movement of a shoulder, expanded to the full shoulder shrug, means I have no confidence in what I'm saying. Dawn Archer seems stuck on timing answer delays then just repeats what is said.
In the Michael Jackson episode Cliff Lansley chooses to ignore all his previous expert observations in other episodes about people who shake their head in a negative motion while saying something positive. Michael Jackson did this several times yet Cliff Lansley thought he was telling the truth. Cliff Lansley is obviously a Michael Jackson fan and not being impartial at all as an expert should be.
I think it's time for a couple of new experts. Certainly keep Kerry Daynes as without her the progamme has nothing but find some new ideas for the others.