I would look into a Port City 2x12. they have this cool sound deflection technology
"The Port City Wave™ cabinet is constructed with a 45-degree angle sound deflecting panel located at the back of the cabinet. (Between the top of the cab and the backpanel.) This panel is dadoed on both sides of the cabinet for ultimate support. Internal sound waves are projected from the back of the speaker down to the bottom of the cabinet where another 45-degree panel projects sound waves towards the front of the cabinet. From there an angled port which runs the width of the cabinet and projects these sound waves out and up towards you. This allows those sound waves from the rear of the speaker to mix with the sound waves from the front of the speaker. This gives an effect similar to that of your sound coming from a PA system. Your tone is balanced, full and clear." -port city website.
http://www.portcityamps.com/212.html
My friend has got a Port City 2x12 with V30s and it honestly is one of the best sounding cabs I have heard. It has a really nice well rounded tone, and that deflection technology from what I can tell really does add clarity and a nice balanced tone.
Mesa Cabs are really nice as well, built like tanks (as all mesa products are). They have some cool designs as well like the 3/4 closed back design, but if it were me I would look heavily into Port City cabs. They are soo sweet