I liked my Avent bottles that I registered for. They seemed good quality and weren't any more expensive than the other top brands. But... my daughter, who nursed most of the time, couldn't drink well out of them. The nipple shape was too wide and she got milk everywhere. So... my advice is to get one pack and see how your baby takes to them first before buying more.
Avent Infant Feeding Set is recommended by CalMommy