Fort Lo Pro

yeah can of worms etc...

I disagree. For puncture protection I'd place the Courier Berlin above the Marathon Plus. I think the hard rubber insert in the Courier Berlin is actually deeper than the same in the Marathon Plus. The Durano Plus has a much skinny hard rubber insert, so its not a real comparison. Even Schwalbe rank their Marathon Plus as offering significantly more puncture protection than the Durano Plus, so the Durano Plus would fail absolutely in this regard against the Courier Berlin.
Both Schwalbe tyres DO have better handling characteristics than the Courier Berlin, till the Berlin has been worn in for a couple hundred miles, then it is similar.