Baby Spit Up- can't find anything that helps

My baby is almost 5 months old and since she was born she has always spit up A LOT. She was EBF for 8 weeks, then formula. We have tried 3 different formulas (honest company, enfamil gentle ease and Hipp -German formula) per doctor we put rice in all her bottles to try and weigh it down. Nothing helps and nothing works. She's on Zantac 2x a day as well.  She doesn't seem to be in pain, she is gaining weight normally so I guess it's more of an annoyance than anything. We go through 10+ bibs a day, 2 baths, new sheets ect just to try and keep her clean.