So we've recently received our new NWTs and they're great. I'm not too sure about the tyres (that's how we spell tires here in oz) though. It came with the standard Scwalbe Marathon Ks (I'm not sure what the K is about, I can't find a K model on the Schwalbe website). I've read a lot about the Supremes and they seem to be good. The main thing I'm after is a dynamic ride. The current rubber is noisy and doesn't seem to react too well, but I guess it's a completely different bike than the one I've mostly been riding around on previously.
Have any of you made this switch? Are Supremes really so good to ride on? These will be used for loaded touring.