I have the 3 different tog rated grobags and must say I love the ease of them. I did buy another one from best n less a few weeks back... just the light cotton one, thing is it's soooooo much smaller than the grobag! I also find that the zipper etc on the cheaper one not as good and the design isn't quite as good either. That's just my opinion though. I like that the grobag thermometer also tells you what to dress bub in and which grobag for what temp.