We used dr browns for ds and I agree they are a pain to clean and not very portable since you can't mix the bottle with the insert in and there are so many pieces but are great for gas or reflux issues. For dd we used the drop ins they were good but he made a mess with them so we went to the Avent and she did good with those. I likes them bc they have a wide opening making it easier t clean, but bc the wider opening they are a little harder to fit in pockets in the diaper bag.