It generally comes down to personal fit, what will suit some people well won't work for others at all. Best bet is to give them both a try and see what works best for you. A local baby wearing meet is a great place to start
Chew the mintie please don't think I'm being rude or having a go at you, but please do a bit of research into using a baby bjorn and other similar carriers. These are sub optimal for both bub and you. Sorry OP for straying off topic!