Yeah, I've been using them for my son who's had severe reflux and colic since birth, and they've been great. As others have noted, however, the problem is FINDING them! I got mine second hand on Trade Me but desperately need some more advanced teats and also want to try the new feeding cup that's advertsied on US websites. We don't have a Toys R Us in Wellington - does anyone know of somewhere in Wgtn where they stock them, or a NZ mail order place? PLEASE HELP!