While I've enjoyed the Fever series thus far, this was definitely my favorite book. Less politics and drama, more action and passion. I love how everything ended up, and the twists I never saw coming.
R-read #1: I read the start and the end of DREAMFEVER, then came to re-read the entirety of SHADOWFEVER. I'm a big Mac 5.0 fan, though I skeeped right through the Dani-centric perspectives (the writing style is too frenetic). I wasn't a big fan of Mac's perspective early on, it seems I like my heroine's gritty and a little broken.