this probably isn't much help, but my sling is the one from motherwear. i bought a larger size, XL i think, to allow room for the "girls". now that ds is bigger, i use it on my back alot, but that doesn't help with nursing. i've used my friends maya wrap, and loved it. had i tried it before the sling-EZ, i would have gotten one instead. i use a frame backpack, too. and i don't like the snugli-type mutiple strappy things, although my best friend, who is an A cup after nursing 3 kids(two into toddlerhood) loves hers, and thinks my sling is "dorky" looking. to sum up: i can't live without my sling.