I have a preference for Moda White as well. It has a wonderful hand and is not see thorough. That said I must say I just watched a PBS show of Fons & Fons last night and they made the cathedral window, MaryAnn Fons said that the pattern is historicaly made with unbleached muslin because it ironed best however they chose to use colored background fabric. It was an interesting show, went upstairs and made two squares just before bed to give it a try.