I realize you're praising him, but I think that even under-rates Koscielny. If there are two prototypes for a central defender - the tall strong Sergio Ramos / Pique types who can clear headers, and the short quick types who can catch up and recover when someone beats their offside trap - then I'd have to say Koscielny is absolutely world class. He's a hothead, sure, but he has some of the most fluid reactions and instincts in Europe back there, and just incredible speed. Wasn't there a UCL game - against Bayern? - last year, where he made like a 60-yard run at Usain Bolt-like speeds to come back and ended up getting the goal-saving block? I've just seen a long list of incredible plays by him. He's not in-his-prime Vincent Kompany but he's everything you could ask for, even at a superclub.