I really liked my woven wrap for the newborn stage (simple piece of cloth---I bought a very long piece of heavy cotton gauze-type fabric and hemmed the ends). But, unless I already had it on and tied, I didn't like using it when out and about since it tended to drag on the floor. It was a lot of fabric to handle!
For quick trips in and out of the car or into the store, I tended to use a sling. I had a borrowed pouch sling with ds, but got a lovely ring sling for this baby since I really prefer ring slings to pouches. We also used a water ring sling in the summer for the beach/pool and I loved that one.
We got an ergo when ds was about 10 months and I loved it for both front and back carries. I actually wore DS in that till last summer, when he decided he didn't want to be worn anymore. I'm getting an infant insert for it for this babe. I LOVE my ergo! There are lots of other similar types of soft structured carriers too and from what I understand, you just sort of have to find the one that works the best with your body and is the most comfortable.
I tend to look for carriers that position the baby facing me rather than out into the world, since they are more sheltered and protected that way.
I know I have heard some concerns about they baby-bjorn style carriers where the babies legs dangle from the crotch, in that they can cause hip displasia for the child. I have hip problems myself and I didn't want to increase the chance of my babies having them too, so I've stayed away from those types of carriers, though I know lots of folks who use and like them.
ETA: Both of my ring slings (water and twill) are by sleeping baby productions. I love the way she does the shoulder on her slings.
Hope that helps!
We did use a backpack hiking style carrier for DS some too as he got a bit older. DH, especially like that one when we were traveling/camping etc.
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