Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Stay away from wide-neck!

We received the wide-neck started kit and they were awful! They leaked all down our baby's chin, which is horrible when you're fedding him in the middle of the night. We ended up buying the Playtex VentAire and have been quite happy with them--but our baby has never been particularly gassy. I have a friend who swears by the standard size Dr. Brown's, but I had such an awful experience with the wide-neck that I don't think I'll try another type of Dr. Brown's.