I enjoyed using Dr Brown bottles. They are the best. And worked wonderfully with my babies.

I’m using chicco natural fit , and medela

I had those for my first 3 but it got to expensive so I use mum because they are easy to clean

The playtex liners are awesome. I use munchkin vent bottles the first 2 months (which were also amazing) and switched to the playtex liners and i do NOT regret it. So much less sterilizing to do. I sterelized every piece before ever using them then you wash the bottle the nipple holder and cap and sterelize the nipples only after. God send for on the go moms!