I'm due in October and I plan I breastfeeding the first month or so, with work and school starting back in January formula will be much easier to manage as a single mom. I had bought some Avent Natural bottles, my first question is has anyone used the Natural Nipples on the Avent bottles for Formula and how did it work? My second question is, I have 6 Avent bottles but I plan on buying Parents Choice bottles for "Just In Case" purposes, did anyone have a good turn out with different bottles being used together? 

I also recently, after purchasing read the reviews on the Natural Nipples for Avent and I seen ALOT of people saying they leak.. What is your experience with that?

I'm a single mommy on a really tight budget! I would really hope my daughter can take to the natural nipple and also to the cheaper nipple on the extra bottles. 

I also plan on pumping and bottle feeding to get her used to the different nipples before transitioning to formula. 

Please any input is appreciated!