Hi Bob,
The thing is, the MG12T-V is so close to the cost of the BA12-3SLT, that it’s the cabinet you should be comparing it to. I went through the same conundrum, the difference being, I had an opportunity to actually try the 800/BA12-3SLT. If you searched the site you might have even seen my thread asking about the two cabinets.
In the end, after talking to the dealer and Jeff himself, I jumped on the BA12-3 feeling the bass array concept really reflected the better option. The BA12-3 is the most modern, goes lower, disperses better, is more efficient and can handle more power than th MG12T-V. It’s well worth the extra money and the cabinet that you should really be comparing to the 12T-V.