Hi Myrrah,
It does sound like your baby has reflux but it sounds like he is a happy chucker and doesn't have any pain associated with it. My baby was the same and I put him on the Anti Reflux forumula and it did help him out a little but he still brought up some but know where as near as the regular formula. Seeing that your baby is 6 months he should grow out of it before to long. My baby outgrew his reflux at about 7.5 months.
I would discuss with your Child Health Nurse before changing formula to the AR or discuss with your pharmasist perhaps.
Hope it sorts it out soon.
Jen :)