babebambi - Yes, I think this would replace the 12.0 for me personally. While it's nice to have the option to bring two 4 ohm loads to a gig.... let's face it, it ain't gonna happen. The 9.2 and one of my 212 cabs (I have the Uber and a NeoXt) will cover the loudest gigs I have to do. If I were playing super high volume music in large rooms, I have my GBE 1200 which can push 2ohms... so I'm pretty much covered.
I think the 12.0 is still a very valuable amp, it's just a matter of how much speaker coverage you need.