Suse has given some excellent information about all the different types so ditto what she said.

I foudn the wrap style the best for little bubs, great position especially if they are colicy, refluxy or just like to be curled up on your chest. We had a one shoulder ring sling with DS that I was able to BF in, although not handsfree, I would need to support with one hand if I was walking around but like sunshine_sieben said I think this had more to do with my boobs than the carrier.

Once both my kids got to six months I swaped over to a backpack style. With DS we had the rigid style and with DD we used the ergo. I wish I had the opportunity to use the ergo from newborn but didn't know it existed. My SIL and a friend here in town have both used the ergo with the infant insert from newborn and were able to feed in it - although you need to be careful they don't slip out apparently

I have heard great things about the mei tei styles and wow there are some gorgeous designs out there are they called catbirds or something?????

All up I have had 3 carriers for different purposes, wrap for up to 9 months, close and comfy - one should sling - get and easy to put on, does pull on one shoulder and ergo which has gone from 6mths to 2 1/2 years.

As for hubby - he used the wrap and he is a pretty big bloke - he liked the wrap but I had to wrap him up - he never got the hang of tying it. He also likes the Ergo and did try the one shoulder but it didn't really fit well.

Good luck with your shopping