Care to share the pros and cons of the carriers that you all having, thanks

Used both a sling and a ergobaby. Ergobaby is great, really nothing to complain about except the amount of time/acrobatics to wear it properly esp for a less flexible person. Sling is ok, it's convenient and easy but I am always paranoid baby would fall out, and plus it seems it's warm in there and baby might want to have a better view of the world. (That's just me speculating)