I'm with @danapz on this one. Had Dr . Brown with my first daughter but took forever to wash bottles because of all the parts, ended up using Tommee Tippee and I loved them. Plan on using them for this baby.
All your own preference. Try a couple. I love the playtex drop ins. I used them with my first and once I'm done nursing will use them with my daughter. But I would buy like one of a couple different brands and see which one baby likes best