Done the search and read up about the pros and cons of the ultimate puncture resistant tyre - the Schwalbe Marathon Plus. It also comes in my size (700 x 25). I am after them as I had a puncture this morning on my Armadillos - I actually quite like the Armadillos - but when changing the tube, I noticed the wheel (back) had a few bald spots and also a couple of spots where its worn through to the kevlar belt. The question is how difficult is it to put on the marathon plus at the 25 size? Its my only hesistation in just going out and buying a pair.