I tried a few brands and found one that worked for US. All of you other Mommy's out there, please feel free to comment. Let's get some more info out there for the other bewildered folks.
Avent
I started with Avent because I saw the most convincing positive reviews. I found that the flow of the slowest nipple option was just too much for my daughter. Most of the formula ended up all over her and not in her stomach.
Dr. Brown
The bottles worked alright. They reduced air intake and were slow enough for Abby to keep up. However, cleaning the various pieces and parts was a real pain in the butt. I would highly recommend these for babies that are very sensitive to air. They work great!
Playtex VentAire Advanced Wide
Unlike the first generation of VentAire, these have basically no margin of error. The disc at the bottom of the old bottles was replaced with a female device the is place on the male device that is built onto the bottle. There is no risk of placing the device wrong and causing leakage out of the bottom. The nipples were slow enough for Abby to keep up, didn't cause her grief with air in her stomach, very easy to clean. Playtex also makes VentAire in Crystal Clear form, which is BPA free ( for all you moms that care about that sort of thing).
My best advice to new mothers is NOT to register for tons of bottles. Usually it's a trial and error process.....kinda like formula......and really, parenting in general.