Re: breast flow bottles
That's the only brand that we used, but I do know a few others who liked the Avent bottles for their BF babies.
Was I reading right that baby has only tried a bottle a handful of times? It may be that it is not the specific bottle--though trying another kind might be more to her liking--but just that she needs more time to figure out bottle feeding. (Milk from dad? Out of this thing? But it's slower/faster/colder than I like!) It took 2+ weeks of my husband gently but persistently trying to get my LO to accept the bottle--and she screamed bloody murder the whole time. It was very stressful but necessary since I had to return to work.
If you tried differnt nipple sets, then it sounds like it is not a defect but for some reason may not a good match for her. Personally, I wouldn't be too concerned about the 'testing' your husband did--since compressing with your hand and holding vertically are not the way it is actually used by your baby.
Mama to M, BF 17mo
and H, born Feb '12