Fletch - that's great! Yay for Zane's fantastic weight gain! It goes to show that what you are doing is working well.
Gabby has 5 feeds a day - 3 bottles (2 x 180mls and 1 x 240mls) and 2 BFs.
We use Avent bottles too. I love them. I think they look nicer than other bottles, LOL. Gabby hasn't tried anything other than Avent so I have no idea how she would go. Knowing my luck, she would have been fine with the reeeeeallly cheap ones.

I just went to Safeway today and got a couple of the little sippy attachments for the Avent bottles. I am trying to get her to have some water after she has solids (even if it's just a little bit). Unfortunately they didn't have any of the handles that attach to the Avent bottles. I guess I will have to search around the chemists.