This is the first pump I ever owned, it worked wonders for me when I had my son. I ended up exclusively pumping for 2-3 weeks before my son was able to latch due to a lip tie, and this got me through the hard parts, removed milk very effectively, helped me fully empty, and it was great, I barely ever had a clogged duct and when I did, which was my fault for not pumping my full amount of time, it helped remove the clog and relieve the built up pressure. The suction is great. I also love the Medela bottles too. This pump also fits on the Gerber first essential bottles Gerber First Essentials 4 Months+ Medium Flow Clear View 9 oz Bottles with Latex Nipple - 3 CT
which are affordable and fit more than the 5 oz Medela bottles. This pump is amazing.