I was given some old Avent bottles but they weren't any good, the design whenever it was made, you took the whole bottle apart. They look different now though.

I have ended up using Pigeon bottles. I planned to BF but it didn't quite happen, so at the last minute I bought a Pigeon breast pump, and that is how I've ended up with Pigeon bottles. I then bought Pigeon breastmilk storage bottles which worked out cheaper than the proper bottles. Now most recently, I've bought/fluked two lots of Pigeon bottles on eBay, so I just have to buy teats.

I have an Avent microwave steriliser I got from the op shop, but now I'm onto using Milton.

Now I've found out two more bits of information, the newborn/early stage teats are slower flowing; and wide neck bottles are apparently more like breastfeeding.

Also Pigeon bottles seem compatible with Medela.

So I would ask if you are thinking about breastfeeding, which pump do you think you will get, as that might affect which bottle.

Then if you pick a brand of bottles, it seems easier to stick to that as then all the bits go together.

Also a bottle drying rack is useful, I have a Munchkin drying rack.

hth