I do like a lot of Melissa Leapmans stuff, have you seen her book released last fall, Hot Knits? Wonderful stuff!
Annie Modesitt has that great looking shrug on the cover of the current Vogue.
I pretty much like most of the regular contributing IK (Interweave Knits) designers too, like Ann Budd, Nancy Bush, Pam Allen, Melanie Falick, Teva Durham, Véronik Avery etc.
Oh and I can't leave out Jo Sharp!