She sounds just like my daughter (who also lives in a bib). Both of my babies have reflux and are on Zantac. My daughter still spits up constantly but is now just classified as a "happy spitter" - it doesn't bother her and she's still gaining weight fine, it's just a PITA when it comes to laundry. I've come to terms with the fact that she's just going to be a mess for a while!
We tried mixing in rice cereal but that just made the spit up thicker (that's all Gentlease A.R. is - it has rice cereal mixed in) plus they were drowning when they ate b/c of how big the nipple opening was to get the formula through with the rice cereal in it. Add to that that a lot of pediatricians don't recommend adding cereals this young because it fills them up without providing a lot of nutrition.
I would maybe ask about trying Prevacid - hopefully it helps!