I already have 2 dozen Kissaluvs for my newborn, and I need a few more covers. I just saw the Thirsties covers, and I think they're adorable! I love that they come in colors, and everyone seems to love them. I can't find anyone who has used the covers with fitteds though. It seems like everyone uses prefolds with these. So, has anyone tried them with the Kissaluvs? Opinions? Thanks!