I'm sure they're both good but the baby bjorn one I had 10 years ago looked very uncomfortable and put me off.
I'd recommend moby it's very versataille, I can't see how you would breastfeed in it though. Easy to wash too. The downside is everyone looks at you weird when you're wearing it for some reason.
Have u looked at a Close carrier? Like the moby but its stitched into shape so u just pull it over ur head and then pop baby in