After reading all of these threads, I reckon I could make a killing with a Baby Carrier Rental business - you could rent the carrier you are looking at buying to make sure you and bub likes it!

Soz chikkiit's already available, for free, through Baby Carriers Downunder.

It does sound like you have the cross up too high misty - it needs to be right in the centre of your back.

You might find that your little one would prefer something with a panel - like a mei tai, that they can't lean backward out of (I have this problem sometimes when wearing Laa in a wrap, she likes to trip out at the clouds).