I think the ergo/manduca difference depends a bit on your body shape and size. I LOVE my manduca so much. I found it cool/lighter than my SILs ergo and it also fits me better. SIL is a slim, size 8 and loves her ergo. I am a solidly built, tall, size 18 and love the manduca.

I prefer the structured waistband of the SSC to a mei tai. I would really love a Baby hawk carrier called an Oh Mei, which has mei tai straps and a the waist of a SSC. Maybe I should ask for one for xmas....