Bottle advice

My little girl is 3 weeks old. Starting at week 1 I had to switch from breast feeding to formula and pumped milk. Long story short one of my breasts wasn’t producing milk or colostrum at the time and she wasn’t getting enough food.

She has terrible reflux and gas problems. We have figured out bottles play a big role in this. We have found Dr.browns works pretty well for her but I’m just curious have you gone through this and found a good bottle to prevent gas and reflux?