Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for Everyone!!

I bought this pump because of all the reviews thinking it was the best of the best, which I guess it is for some apparently, but not for me at all. I spent hours and hours pumping and would end up with only an ounce, maybe. I got so frustrated that I went out and got the electrical Evenflo Comfort Select, a great pump by the way because it is easy to use, its either battery operated or has an ac adapter, and its actually cheaper then the Avent!!! I wish I could get my money back. Don't waste your time on the Avent because its not worth it.