I think Vamp Xander and Vamp Willow is the only combination with Vamp Willow I haven't seen much of--at least from what I remember. Which is a shame! It's also the only X/W version I'm really into.

With regard to the first four icons, I don't think I'd ever appreciated that shot of Willow so much until now.

And I really like the coloring in seven; it reminds me of lion illustrations, with her hair around her like a mane.