These are the first pillows I brought of this type. I didn't know about the 3 pound and 6 pound difference but seen one before. Over size doesn't mean it is really big, it isn't any bigger then any other pillows I have. Two for XX buck is a good price compared to other places. I would not buy them again at this price are cheaper, bedding has become an over price scam and if you believe all those ads you see on TV, you are just feeding the scams.