I would suggest to steer clear of this company. While they are a far cry from thier earlier days and thier products have undoubtably gotten better; there are still a lot of reliability and performance concerns. MA Audio comes from the same company that makes Mobile Authority, Thump, etc. I do not feel that I need to elaborate any further on the quality of those lines- Very Poor! - this much has become obvious to many serious Audiophiles.
For your situation, I would say money is better spent on a pair of JL Audio 12W3's, They will easily perform above the standards of MA Audio, and are also available in a wide variety of VC configurations.
There really isnt any honest comparrison between the two.
JL has proven thier woofers as an industry stronghold- winning more IASCA and USAC competitions than a majority of other manufacturers.
On a personal note, with 2 years of active SPL competition and going into my 5th year of SQ competition- JL Audio- has ALWAYS placed within the top 3- usually 1st in about all of the events I have attended.
JL would be a better choice by far......
take it easy,
-zane