I do really like my Mei Tai, both for functionality and look (I currently have an Ellaroo, but had a BabyHawk too). Mei Tais are more expensive because of the construction - there are lots of "joints" that need to be well sewn and the fabric must be sturdy enough to hold, yet flexible enough to tie.
Usually, the Mei Tai I have seen with silk have a panel sewn in (my BabyHawk was like this) - the body is still a cotton. This adds stability to the body (and adds the feature that you can turn them inside out for a non-silk/non-girly pattern).
Michelle, mama to Isabelle (03/04) and Tom (02/07)