my girlfriend got me the adult feeding bottle with the long nipple. It is intimidating at first because of its size. I had my first experience with it tonight, and after coaxing by her (she insisted in bottlefeeding me first time out), I accepted it. The first tug was hard since it has been 40+ years since I bottlefed, but after the first few minutes something took over and it was just natural. Best advice is find something you like and stick to it. Just be ready to accept that it will now be something you will do and want.