I used Born Free, which had lots of small parts to wash, and my sister used the Dr. Browns, which had a lot of small parts to wash. They both were good, but we hated washing the small parts. I know you can put them in the dishwasher, but my daughter had to be on soy formula, which is thicker than regular formula and it wouldn't come out in the dishwasher, so we had to wash all the parts by hand. Because of the small parts, I wouldn't use either the Dr. Browns or Born Frees. My daughter would take any bottle that food came out of, so I didn't have issues. We used the Playtex Drop-Ins, which were great when it came to cleaning, especially while traveling. Out of the two your chose, I would go with Tommee Tippee.