My first try was with the Playtex Flex-something-er-other. It had a valve in the bottle of the bottle promising less gas and colic (always good), but dripped everywhere. And, it didn't pass the Kate test either.
Today, I bought a Nuby Natural Touch bottle. Very funky looking, which I thought was promising.

Daddy P gave it a whirl this afternoon and got 4 1/2 ounces in the kid, which is a record when it comes to bottle feeding. He was super excited about this bottle. It was rather amusing until my cheeks started to blush a little with jealousy.
Now that we've solved our bottle problem I am debating our next nipple problem: the pacifier. Kate hates it. She will rarely take it, and sometimes you just really need a soother. For instance, when you are trapped in the car with her screaming for twenty solid minutes. I would be happy then if she would use it to calm down. But, the "soothie" doesn't soothe... I am debating whether or not this is a blessing or a curse...