Milk bottles and sterilizer for newborn

I used tommee tippee bottles, steriliser and warmer cause there was a set. Didn’t really like the bottles in the end cause the shape would cause milk residue (baby cannot drink all due to a curve ridge) and that also made it harder to wash. Avent bottles (wide neck) was more versatile and stable than spectra bottles. I also used autumnz storage bottles which can use avent teats. Depending on how often you wash bottles and pump, I found 4 to 6 teats worked best for me.