Bottle problems

Breanna • Jayce's mom💙 2 Babies in Heaven 👼👼; Don't take shit from petty ass bitches 💁🏼‍♀️

My son is 4 months old and uses parents choice bottles. & I've noticed lately after him having his bottle, he throws up or spits up A LOT. I thought maybe it was coming out to fast, like the flow of the nipples so I got the slow flow and he still has problems. So what bottle would you recommend?