I have a Warwick 4x10, don't know if you are interested, but rated at (I believe, I am out of town right now, so do not hold me to it) 600w at 8ohm, but it could be at 4 ohm. It has a flight case with it (really pretty), see my ad in the FS posts:
Mesa Boogie 4-10 cab. 8 ohms. Bought it about 4 years ago, works like a charm. go the matching 1-15 to to go with it, im planning on getting rid of both and go all gallien krueger