Oooooh, interesting. I probably won't buy the busts, as I prefer full body sculpts but they look pretty cool. The Batgirl is probably my favourite Holiday variant, although I'm not sure if I'd ever buy a holiday theme (loving her hair and face though!).
I really like the Holiday Batgirl. It's cute and it almost looks like a whole new sculpt. I was very unimpressed with the Holiday Harley; it looked like a quick cash grab to me. This one looks like they actually put some effort into it.