I really like them. I don't think the shield is as cute as the regular Mam's, and it does not curve to fit the mouth as much, but other than that I much prefer it. At first it was a bit strange because the neck of the nipple is really thin, but the actual 'bulb' type part is roughly the same size as a regular MAM. Now I find them far more comfortable, and that they stay in my mouth far better. I now sleep with my MAM perfect every night and don't really use my other ones. The only downside is one is about the same price as 2 regular Mams, and they don't seem to sell them in the UK. I bought mine from a US seller on ebay, and so including the cost of shipping they are really expensive for me! I only have one, but I feel i really need to at least have one other if I want it as my main pacifier. But generally i would really recommend them, they are definitely a bit weird at first, but stick with it for a couple of days and they are really good.