Respectfully, I have to completely disagree about Bob Ruff. I listened to his original podcast on the case, and I must say, it was littered with inaccuracies that he would have to correct in the follow-up episodes. Bob has an agenda, and before he even began investigating the case, he had talked to DE and pretty much decided they were innocent from the jump -- which is fine, but he tried to pretend like he never had any bias in the case, which was completely false. He's a guy who strictly looks for questionable cases simply so he can act as this sort of "injustice warrior" fighting to correct it (Adnan Sayed, etc.), but the worst part of it is, he enters these cases and makes up his mind without ever really delving into them beforehand. With the WM3 case, he was learning as he went along -- so along the way, he got many things wrong; then essentially painted himself into a corner and had to double-down before investigating all aspects of the case (which he nowhere near did).
Also, his Oxygen special was completely pointless. Don't get me wrong: I support his effort to have any DNA tested. That said, his special included nothing new about the case at all. One would be better served to simply watch all the Paradise Lost docs -- they contain much more information. Ruff's special -- a lot of the time -- is simply footage taken from the PL docs anyway.