Hi...The company who's cloths I've been using went under a few years ago, and every cloth I have (I have a few) doesn't even come close on Georgian windows . Freshly cleaned, if the sun is shining they all leave some kind of wipe mark on the window, whereas the 'old' Paragon (sky blue colour) one's leave nothing and clean perfectly in full sunlight. Even a slightly dirty one cleans better than the brand new Paragon ones. (dark blue) I'm after advice from professional window cleaners that care about doing a perfect job every time. Do you recommend a cloth that does the job 100%? Thanks for your help!