Hi mama! Honestly, it really depends sa baby mo kasi bawat bata different ang preference, a few of us tried Philips Avent, Tommee Tippee, and Dr. Brown's, and lahat naman okay naman, walang issue sa sterilizing or feeding. I'd suggest maybe start with one brand muna, then if baby has colic or feeding problems, that's when pwede ka mag-try ng iba, but most of the time kahit standard bottles okay lang talaga!