I haven't been quilting long (6 months or so) and the omnigrid seemed to be the easiest to buy so that's what I've gotten used to. I do like having all the marking lines, but interestingly, my rulers sit on a window sill near the dining room table where I cut, and the 12 1/2" square ruler sits up against the window. I noticed the other day that all the yellow is fading from the sun.....