How do you like the Emi Wizards?
I absolutely love them! They are very high efficiency, which is necessary for my dual 2W amps. They are also large, so if you're thinking about getting some, make sure they will fit; mine almost didn't fit into my 2x12 due to the magnet size.
Tonally, they are VERY nice ... unlike most loudspeakers, they retain their low frequency push even at low volumes. (I'm guessing this is due to their high efficiency, but that is just a guess) They have a slight midrange boost, but otherwise are quite 'hifi' sounding.
For hard rock, I'm hard pressed to think of anything that competes aside from the Ragin Cajun.