What bottle brands other than NUK has these types of teats? Or is it only NUK? Looking for other bottles for bby as avents natural teat flows for nb seems too fast and lo doesnt suck on avent classic teats. And in the hosp bby sucks well on the type of teats on the pic above. Could anyone kindly advise on bottle brands with this type of teats other than NUK as NUK seems a little bit too pricey.