Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do NOT Buy This Pump!!

I just bought this pump at Walmart because my Medela pump just quit on me. I wanted to buy another one but was in a pinch and settled for this one. I just spent 30 minutes trying to pump and I got nothing. The suction on this pump is HORRIBLE. There is no suction whatsoever....it's awful. When using my Medela pump, milk begins coming out instantly. With this, barely two drops came out after 20 minutes. I tired it on every setting there was and nothing. I agree with everyone else's reviews: spend the extra money and get a Medela. They are worth every penny!