I think this is a tough question. I have a couple of rippers AND a scalpel type as well. Different fabrics, threads and stitch size make me grab for the one with the wider or narrower blade. I've tried lots of kinds, can't say I have a favorite. My problem is using them too long! I forget to pick up a new one when the old one is dull. Anyway, I think it's kinda' like picking out panties.........every one has their favorites and some of us have several types. :D