F.M.
I bought Medela, since they made the same breastpump that I'd gotten. When I compared their nipples to Evenflow brand, i couldn't tell the difference. Same size, same shape, same texture .... but way cheaper. So I bought Evenflow. Just a simple bottle and nipple combo - nothing fancy, not a ton of weird parts to put together or try to figure out. With all the BPA-free hype a few years ago, I considered buying glass bottles (I had carpet in the house at the time, so didn't worry about breakage).
Good luck, and congratulations!