3.5 
 Very cliche-ish, but very, very entertaining. I appreciate a feisty and witty female MC. The gorgeous male MC was ok, but a bit full of himself... I loved their fights, but his good looks (and his sister's) were mentioned too many times, repeated ad nauseam throughout the book... Anyway at some point your eyes go numb and you almost oversee these parts xD 
 Definitely I'm interested in Onyx, I don't know about the other books... We'll see in August :)