What is the best bottle to use?

Brest is best 2.0. ...But if you need a bottle, i like the ones that have a little bag inside that deflates as the baby drinks the contents. Less likely to lead to swallowed air, which is what the gas is in a gassy baby.
Any brand that works. Unfortunately there is no best bottle that i could suggest for your baby. Every baby seems to have a preference as they master the skill of feeding. There are several brands on the market with various claims but if the bottle you are using works well and your baby is nourished, no change is necessary.

Related Questions

What is the best bottle to use for a preemie?

Premie nipples. Each baby is unique. Smaller preterm babies may need to use a "premie" nipple for the first few months. The bottle itself is a matter of preference, yours and the baby's! remember, babies, especially preterm, have very small stomachs. Don't overfeed. Read more...
Trial and error. You need to figure this out through trial and error. Search online and read the blogs. Then bring your baby and see which bottles and nipples are closest fitting to your baby. You will need to try a few until you find one that works. Read more...

What is the best bottle nipple to use?

Whichever works best. Use the nipple that your baby feels most comfortable feeding with regardless of age. I recommend silicone nipples. Read more...
The nipple the takes. Babies will take almost any nipple. They like ones that allow them to suck easily with good flow, not to fast and not to slow. Whatever nipple you try the baby will let you know how things are going. Read more...