I had one of the oversized 4x12 cabs and don't get me wrong, it sounded awesome. But I scored an orange ppc412 for 450 and loved it. So much in fact that I sold the Mesa cab. The orange really sounded great with all of my heads, and the Mesa only sounded great with my 5150. I'm open to trying new stuff, but I am truly in love with these orange cabs. I have a ppc212 as well. Next purchase for me will be another ppc412 and then another ppc212. Unless I can get a pair of VHT cabs for a reasonable price.
Bottom line for me, the Mesa cab sounded good. But the orange cab sounds great. I think you will be happy either way.