I have to say... I love Misti's Cotton Silk. I have a friend that owns an online store and I stopped by her house today to pick up some lace yarn and I fondled the Cotton Silk while there... it was lovely. I'm not sure about the stretch factor because I havent knitted with it myself yet. I bet if you emailed her firstname.lastname@example.org
, she would let you know. I know she is knitting a cami right now with it.